7/28/2019 Chin World Journal No(7)
1/24
0134567809
!"#$%&'(')*+,,-./2!"#$%&'(')*+,,-./2!"#$%&'(')*+,,-./2!"#$%&'(')*+,,-./2!"#$%&'(')*+,,-./2
:;
7/28/2019 Chin World Journal No(7)
2/24
0123567138
9
!
"#$%
&'($)*$'+",+-.$-/+&('$4'
('
$-.-.*-
-$--&&4(.''+&&'&&
,'-$
,
#$:;
7/28/2019 Chin World Journal No(7)
3/24
0134567809
!"#$%&''%()#"*+%#,#-#.
"'"/'#$'+%.2
2/.+$'
#+'
-'#.++
$+":':'.;=-;
HIJKLMNOKPQRSTKLTNKUPJKVULWVXYNV
Z[\KR_aKT[OKHI\KRJKPTOKXJK
bcdefghijkldmknomhbpqmrtglomofufghelgomvwcxhyz{m|kkm}~y{}efgb
'-'++?'@A
%+%=''"+'
%)
#2/2/
"'
"'"'"/'?
G:'#::,%"'"'
""..'
'+%-+%'#!.%-#@A+;!%""#%."#D)2/F"'"".+'+%#"&'.+.+=-'"&;!)
G#%&.?":':'#'$?'
++.:'C.#$'!
#.#%-++.:"'#
"*+:'"+;#$'%+''
.=%"*+:'"+;
#$'>'"?+D//F
.!++;.'#B"*+%#"#$'=-''=+%'$:'#!;!)G#%&.?G#%&.?+%+%?'??+?)";A:#>%!"+#%#%G#%&.?#%+;!
#';?%-
-'=%'C.++.:=
%#%,#.#)
G#%&.?":':'++%?'
?'G#%&.?
%'##%+'$'.?%'G#%&.?#'?+++;#'G#%#%,#.%!+'%)
"->/>+'+'+%?%:=%."=-;+%
#2E#2+%
++$';+.%%%'%-%!#?#$'++;!
QOKOLaYNKUQLTNKQ\KOKVIKYOKVXYVaKPKRY\KOK\KV
%!#$!!.)"+'
"#$%&'#$%&'+!#+;!)
"=.'.;!"=.'+'#';"#$'*+:'%?)"%#+$G:'/+%=+%#=-''?
!#%'+#"+#"+.+#>'+'#D/F2/#
#-+%%!>?)
";A>+!=.';'@:'.+%.+.G#%&/%%%?='-*+:'#$$###''%';>?)#%/+%''+%';!=.'+%$'/>+#%/+'!=.';
+/"#'
;'%'=%;!"#'
+%"+%.;!;#.>'=%'>.>'=%'>.>'=%'>.>'=%'>.>'
+G:'%"-='';
?#$'"!"'+%++?#!.B'#B#$'#/>A#$'!>G:'"%-":':'#?%-'>'=#$'!=-=''?+'#B'%-'+%#$'>/%/'"
?#$'+%"''+:.
:#$'#?%-'#'#$'++%G:'++#$'#"+2/"'%?#$'.%%)
++$'!
?!%-'"-='';%>>&/$&+T
$&$!"!$4-HB&S,4?RJ
B&,,$!"!$4-H$-$''!
,-.!&/!#Q!$!#:HU#!"*"!-H!*"#$*:Z kq r k D [ op$!$!
>"#$;!*4'&U!B&?,4!-'&U!:HB&?,4$$A-MO&*)*"&!H!B&!" &!
"#$>&B-
"*$&$
B:!*+*&
!+oa r [ [ _ d[ dk \
&Y&-,4&
$>"#$*&&-*
7/28/2019 Chin World Journal No(7)
5/24
0134567809
!"#$"%
"&'!(!)*#"!+
"!#&$,%-."+/%"#/'+/%-.2/"/#%-."!/%+#/!#/#$
/!"#$
"%/%2/#
#%-./%:
#!;#
#/!#
""#%-./%2:##!_$#,%-./%+#!:#::@C_/!":/%"#]:)=@Ad)=@*'#`=!
#"#"!#"
2.!:'+#!##2.!:
"#"#
#$$
"/%"##"//>2.!:'+#!#2.!:##!:B@*D/%+%-.//%2#!:B@DB*D]B@=DB@*D$#!:#2.!:]#!:BCD#!:BeD$##!#
#2.!:c
2.
B/D
!:#f_'+_#`a&
:"]g_#`ad@&
']g_#`ad)&
-]"h&!"]-%#"h@&:']-%#"E)&b!]"h&'$!]-%#"E"2+/%+>=%-.$
ijklmnolpqrsuivsiowxyrsrz{oli|ol}ol~isllk|smnx
psms}pqrsl{ixyrslpqrsimnx~l{s
|rslki|xlj|os~isllzm
J K W L [O L N L U L N L K L [
X Y[U K K UN [
'+
X SK M
.%&-//%2(!BCD#_"B==D"#%&
-+c
#-+.%&/
""#bg
##:"/!'
'+>.
# X MLT L '+ N P L
./%-+"/%E"#+/%c/!':%&
""#
V
/g#%-.$-BA==D"#%&-+2:$-
V
/#"!#
/!V R N N K
[ST
">"&\"'-."/"!
V V L Q
#-+"-._#/%-+"""+
V R N N K [ST
V L Q
-#-+"#&"/"+>
]]"!]
$$+>
:c"/
"'
BC====D"#"!$
#c:&2:
%&(!B@AD#"!./c"-'+'$
"=!H#
'$!##
"gH#]]2.
##"'+:_
"#E"#=#)=@A
'")@#"!+
##"'+:_"#E"#_#a#"c#"!".&-+>h"h]2.!:h"h'+/=!#"#-+
"#$
".&-=!H###
"'+:_"#
E"#".!_
##
#-+>$+"!###
"'+:_"#E"#!:#"$$!"=!H#:_"#E#"&"/?+-+"#!#B#""/D!#B#""/D!#B#""/D!#B#""/D!#B#""/D
(!C#
#=2.#!#/"/!:=!H#c!%-.".&-=!H#c!&"#"""&'+#":!"/#-+"#
&>".&-
!&H##-B@eD_]
!:/2.2.%
BGD_]"#"h
Bf=D_]"#"
Bf=D_]">B@*D_
#"#-+"#/!:=!H#c!#BACD!!+#!+!"/#_!!/!:.+"#-+_#/!:=!H#.!+#-+"
##/!"=
!+#-+
$."!#2.!:!
&H##-
#E#!&
#:/2.2.%BGD_.#
#"/%$//%"#]#E>#$"#":"/%"#"/#-+
|rslusvsvsl|ssjljrqjljors{wnrs
}pxkyxsol{xy}jmlmvsjuo
_]_-+
""""##
"#"h]"#
__"#"
=""&//!
_#"#""#
>#"$"#
":/%"#=!H##"/#-+\g>#=!H#-.g:H##=_">+#=>:#:"+#=2.!:!&"#/!:#"#
#-""#
>$.!&
"#/!:
#"##"!-+
##=2.cc
"#g"#/%"!
:'"#:+/!:=!H##""!/!:=!H#-">#">#>>"#:-g
"/"!$-#="g
"!!-./!:"F::&=!H#_c!#:">:bc#=%_#g:."/$./_"
#!E+/
$".&-#$"!+
/-+"#
/!:/!:=!H#
_c!g:
H#:#=_
/!:%-./!:=!H#_!!']E"=!H#"g>#"]+""=!H#_#!">]"'+"=!H#_"#2]#!"!'+/
#>-+"#
"!#"!+BfD
#"!+#=&.
$#-2#"!+
/#&2.!:
-%+-+#"#c2"!&/!$#c "("("("("(
7/28/2019 Chin World Journal No(7)
6/24
0123567138
9
!"#$%&'!()*+%,-
#&'!("+%,-./%#)+%,-!(+%,-%
44:;?@=AB:
7/28/2019 Chin World Journal No(7)
7/24
0134567809
!"#!"#!"#!"#!"#$%&'()*+*(,*-*.*$%&)*)*
/*$%&.2++*&
,*.&"
.,*&.,*"
+*
:,;,*+
,*'*,,*,;*$*/*(*+*')*(-*?+@A%$A=)*)?)*$,,*,;,*/>+//,?)*()*
*+*)*@(*B,:*.*+$*
C*,;*'*+$+@:*@
+*-D,*C.*+@:*/%$.)*)*,;+@*$*
+*@?E*)*/*+*
(*(?*$(**'*+.;-*:*/+@:*
)*@(*;.*+*$*,,;(-*+*)*
?)*)*@(*+*-D,*C*(*'*$:*=)*+@F)*$)*)*+@+*+@$-*
GHHIKLMNLO
!"#.*:*B,:*!"#.*:*B,:*!"#.*:*B,:*!"#.*:*B,:*!"#.*:*B,:*
/*$%&+%
P,*+*&,*.&
".,*&
Q*,*$@
.*:*,*'$-*F)*(,*;B@'*=?:*.)*'RF$-*.*:*'(S)*)*+-*T**DD>+:*:)*:)*($+/.*:*@$-*
+-*/)*TU,*$%.*,
$-*:,;@)*
?-*)*
(S*(?*($=)*)
*U=)*).(?P
=?)*%*=$%U+@+*..*:*@E$+)*(R>+Q',;/*A*,;%V>+()*/*.*:*B,:*?)*
)*+)*;;,*W+@)*B,**)*)**)*)*)*'()*W*/)*@*
'()*(,*P,*'@)*
'()*,*=)*)*)*&&&
$%;')*+@Y Y Z [\]^
:W(*?2T**
,*T\)*)*+@_
W*,*AB*+@_
\/,*)*,*;;)*W2W(*+*)*',*$\$,*,*=)*E$;;(*-D,**,*,*,;''/*/+@:*
(:*%$,;
)*'*/+@:*
$%'()*
*+*(,*')*(-*/)*
)*$=)*)
$*\.*+@:*(*?(-*)*$+*\
ab c d e
f+)*.;)**\+@gh+*$-**$*+-*/)*,*=)*)$)**(S*(%
+@)*+-*$%;U(*(+*
,*%
=?)**,*'.*:*+-*
/)*,*=)*)+,*(-*
-*'*=?)*>)**
;*$*+'+*RF$-*R-$%)*-*%+@$-*&&&Q'+*.)*E.*$%)*;)*/%,)**+@:*
b i jk l m n o k
p jq i rs t uq o k jv o rjw k
ab l p t exZ uo y o k p jz { uc { r[
| w uy aZ p c e
=?)*
} w ~ k jq [{ k w m s d w um n a } ~d e
;?,*(!""#*,;)*/)*=)*)A,**>;
t k {
o k k w rs r{ jk rw ri { s o n {
uj z { u r| j { n o y jk q ri {
o o o k uw { r { w { { k [
ru{E%$(,*(P+*
?P)*/*+,*
+@$-*
/=?)*+*(\*
b l p t ?Y o oj} o y jk q
b i jk w u { jo?
'*$:*,*/+@$-*"#A-*:**,;"#A-*:**,;"#A-*:**,;"#A-*:**,;"#A-*:**,;
$/*$/*$/*$/*$/*F+@(F+@(F+@(F+@(F+@()*;-*:**)*+-*)*+-*,:*,;*+-*,:*;+$**P?
T(? o o o k
m rj[ w o uo k sjr uw { r
++.*)*(;.*+@
:*,*?)*,*
%?=)*
,/?,+
:*+)*()*)*$P?)*(%/?)*()*'=)*+@)*)*T\*:%)*?+@A%)*/??)*
/$;)*
/%$.)*(+*),*
F)*$%;;(%;)*,;,;\*,/)*PA?T;:*)*.*+/+@:*!#!#!#!#!#
A:*(*A:*(*A:*(*A:*(*A:*(*F)*,*:%>+(+*F)*,*:%>+(+*F)*,*:%>+(+*F)*,*:%>+(+*F)*,*:%>+(+*.*RF(.*RF(.*RF(.*RF(.*RF(T.;>.
,*,%A/*
'$A)*
'*(*(+@:*E
-*++(:*%:*:%(
=)*:*,*>+(+*),*'*(+*P?(+*$,,+@)*=)*:*$-*.)*+@(#(,*,*+#(,*,*+#(,*,*+#(,*,*+#(,*,*+
(+*)*F)*)*(+*)*F)*)*(+*)*F)*)*(+*)*F)*)*(+*)*F)*)*
*A.**A.**A.**A.**A.*
:*(;:%'+@$(:*(;:%'+@$(:*(;:%'+@$(:*(;:%'+@$(:*(;:%'+@$(
)**
$(%/.;-*+?$**$**:*.*+@:*$(%/E,*-*'*P?
)*f(+*+)*
)*ad w u { o w m ue
.*:*$*:*)*+*D;+)*)*,*+**+,*,:%()*(*(+*)*+'P()*)*,**)*>**)*)*(/-*-*)*$A
+*,*)*/*)*
,)*)*$;)*
/*)*
?+@:*
#(,*,*#(,*,*#(,*,*#(,*,*#(,*,*
(+*')*$)*:*(;(+*')*$)*:*(;(+*')*$)*:*(;(+*')*$)*:*(;(+*')*$)*:*(;
)*W;:%'+@$()*W;:%'+@$()*W;:%'+@$()*W;:%'+@$()*W;:%'+@$((:%'+@A%+!#=?**F/(+*),*F)*(+*),*\*;,,??)*+-*,:*,;)*+-*,:*A:*($**P?:*'(($$+***;+@A%(+*),*')*)*)*?
$A+*,*)*')*(%P
')*,*')*
+')*$-*.)*+@(
$((P
(+*$)*+@:*
#)*+-*,:*#)*+-*,:*#)*+-*,:*#)*+-*,:*#)*+-*,:*
AT+(+@AT+(+@AT+(+@AT+(+@AT+(+@$($($($($(
7/28/2019 Chin World Journal No(7)
8/24
0123567138
9
!"#$%&
##"'#'&!()* + ,
- . 4 * 4+ )
#'!(:#;
&CDE(#(#FGHC?(=$C#J#"C&(N>=C>E$!CD(
&LOP"C?
=E>C!"#$%&=$C:(L#(:=E>C
!"#$%&=$C:(L
#(X
=$C:(L#(V;
N&!(=&N=
Q$"
&>!XHCQXL
='"NQ&!(=
!"#$%&?(DE(L'E$?TC&N=$C=Z&B"C&=E&QSS":Y#T$!XNBCRC:
!"#$%B=$C
>C"NB_DE(L=@&CS#>$E";D((HE(\&>=C=$C&!(>C&N=#==@?LX=$CHC]
'D(&N#(>@(=='
==(#!"C
R#CDE(L'E=[=$CM$#(YQ=C#!C>@(
#(=$C>Q$
'?:!HN>$E:V;
=E"?#=G$T=C>DE(LLB
F&&N>HYQHICB"B>!"B!
(C=!"#;B&(#S
#QBC"CQ$=$C
EQXL&(('(CC"CQ$=$C>@(Q$(C>$(!XHC]
&B>B=C&NRC&RC]#RHC
>#"C>HCBH'Q?(C
#C&!(c=C$(
&N"C(&"
>HYQHIB&Q$B!HC##C#NQ$(L'?#;!XNBC=$C"C"C>c=C$(&LC&:C]==&N!XNBC(=$C!"#$%&?(a&DEHNB#
EB"># H?!CD!C#!X
=$CM&(&"C=$C##C(L#;N?>@(
=QH&NVDE(L
'E=$C=E(CC==E
=Q$#(X;?&F>X;?&F>X;?&F>X;?&F>X;
UT:(C!"
#$%&HC&X&!C>HC
:>=L='>N>CR(#
&';U#='L=C&XL
&!&!(LC&!N#;
j k l m n op q s t q u v t q p
#RyI#(C
z + { . fe 4 |
4
?((&!'R&!N>N&XL!"#$%&XN=
B(C&(C=?i , - |
z 4 } * >LQS#
&';_#=!"#$%&="T
&MTCF&M=CCF&M
i ~ B#='?&XLP":C
Q$&!#C&XLP":CQ$
BC. 4, .4 4,
&!&(C
e , 4*
QS#&';
e , 4*
"Y#TC
+ } |*
&!>#BK&!F'>Y#TC#(='?&* , }
z , .. , &L. , 4*
&!#;
, 4 , , , z 4, z ,
.4, z , - z 4 &!"XL(LXN
~ + ,
C!(CX?&L;
i , - z 4 e
=ER!&XLC
R>$L"C#&';
~ + ,
=$CB#H=E"C!(CN&!"C?HC
>##&';
f 4=$CB#H=E"
C!(CL&!"C?HC
>##&'; f4
C!(CN&!F'>"C
"XN=E e "&B?(L>H
>&XL~ , * ?!XD(=E
=FC;;
i , - z 4
&!(C=ED(&XL
.
&BQQ
e - 4~ + ,
&B>HC&!(CN(!C(&(=E=RQD(#FC;N&XLQ=E(Ci , - z 4
RQB#>=L=';
; e H>
- z =EFXC!(C
C
#=&&(CB#>=L=';
c"&&NQ$(C>G$"'">WTC=(C&NVC=TC=$C!"#$%
&"&B?(L>L$(LQ"C
N=&B(D(N>L(E
?LXe , 4* &BQ
#CQ$(#&';"C#
&!&C&>"XN=E$
c"&&N=FCc"&&NXNC=TC&!"C#B?"C&!"XNQ$&(C>>B?"CWI
!"#$%&=E&B?(L'LC=TC('=$C$(CB>L$(LQ"C>#Q(C:(
#&';X>B?"C>C>#C>C
&!&NXN(Q"CB#Y#TCB&(BC=[E>='>N'H:#&';U:(LL
?LXe , 4* D(&XL
"C&!?(#Y#TC&L=[E&'>N'H:
C$(C>C&!&!#X>>$"R"C
7/28/2019 Chin World Journal No(7)
9/24
0134567809
!"!#$%&'!
(')$
!#!
#*'+,)$&)-./
+2&
#")$2,!
2#"
!-%2%(!.'2$&'2"
"*'#./2+#%22
!-%%!"2
$%%"
22#2
2%!2.'
%+(!'2$
#22
:;Z [ \
">-,%]+>'(!"!2!,"B)-%##>./-+2!"%
!"'">2,%#>./
-">#(=!">
B=!$
%%"!
"!%"+%%./
%(+")$&'2%/#%
%2%!".'"!#)_B%+>'(+($
U V W `a
2!'.'(">:T
c `d e [ f gU h i j i k h [ f
%#"!+"$
,lmn.'
7/28/2019 Chin World Journal No(7)
10/24
0123567138
9
!"#$%!"#$%!"#$%!"#$%!"#$%#&'(#)#*#&'(#)#*#&'(#)#*#&'(#)#*#&'(#)#*+,!-$!./+,!-$!./+,!-$!./+,!-$!./+,!-$!./*&'!-#!-%/!-$/!.,#$%&'!-)!"#-!-
)&4'4"!*
)&)&&'
!-#$%#(##
)#$*.
4'$.,'
&'!-#!-#
$,#:;'?*#!-%='#$=-#
#(#=#
&$!,/!-!-,
!->'#$=-#
#(##=
#$!.,
)+'')+'')+'')+'')+''
$%*@+,#*$$%*@+,#*$$%*@+,#*$$%*@+,#*$$%*@+,#*$$!./$!./$!./$!./$!./!"#A$(*)&B*'.$,*#).,+,!-#)$
)%"###$;/!C#$
DNQKW
=-!*
!-,//#-!-#+-C#%4"$#?*#!-%!-/#Z.Z$#.#+''
#/##
4'$!,//
//&4'$!
,-C/!-
[\ ] $!/#
##*=%"#*
*%;###=Z.$!C#)*#.,!_!-=!-$*##.,A!-#.-C/&*+$*#$!--*&)/!-$!)/-=$#!-,!--*#.
>'+$*#$!-`#!-%
=a)B,
!"#A-!"#A-!"#A-!"#A-!"#A-
!-Z#*#!-!-!-Z#*#!-!-!-Z#*#!-!-!-Z#*#!-!-!-Z#*#!-!-
#./#./#./#./#./
#!-!-#)#$
=!-%$b'**!-c;-#!-#+,#$!/-!%##/#),,*'#Z*%,*'#Z
!-#=!->'
/)*#,$,
?*#)$,=!-$
!"#!-
!-,!-)d*!-!-#$
$#)$#!-%!-Z
#*#!-!--!?*#,!"!-!-#!-#,=!-?*##),
'#-*)4'*'#-*)4'*'#-*)4'*'#-*)4'*'#-*)4'*
-,B>!#$#=-,B>!#$#=-,B>!#$#=-,B>!#$#=-,B>!#$#=
#+#)#+#)#+#)#+#)#+#)
$!,!-#/$!,!-#/$!,!-#/$!,!-#/$!,!-#/
/!#,
+$!-%-!
)*>'#=#,.,'!e!-b'##=#,,-*$%!"%!-,##=$!
#*=!-##$#$!e#*%>',,)&$!-%Z$)&$!-%Z$)&$!-%Z$)&$!-%Z$)&$!-%Z$
>!#$$!-%=!-$>!#$$!-%=!-$>!#$$!-%=!-$>!#$$!-%=!-$>!#$$!-%=!-$
+,!-#)$$,!-%+,!-#)$$,!-%+,!-#)$$,!-%+,!-#)$$,!-%+,!-#)$$,!-%
=$./=$./=$./=$./=$./
!-$/-
!-$,)-
!-#-!Z$
>!#$$,!-%,-&,.#!-%!-$/-.ZB&'4'-)*#f>'-!#$#=##-$.!,#.=$#Z.#.=$#Z.#.=$#Z.#.=$#Z.#.=$#Z.'',#*='',#*='',#*='',#*='',#*=
)&/#!-=$+)&/#!-=$+)&/#!-=$+)&/#!-=$+)&/#!-=$+
#)./=$#)./=$#)./=$#)./=$#)./=$
)&B#)!-)&B#)!-)&B#)!-)&B#)!-)&B#)!-
$!$)#.$!$)#.$!$)#.$!$)#.$!$)#.
*%=!-
&'!-=!-!-
#-C#$!*#!-&B#*+!-,#$!.&'!-,#%$,
,=!-#Z.'',#*=)&/#!-?*##)).,)#,*%#%$=!-*%=(=>'##).,>'##-!-$
#Z.'',$!%
&:-g,,,-!
'',4'&),
#*=-A&
?*#$.,'
)4'*)
/#=$">'#=#,##%/:*,).,?*#!-%&'',##$!##))$$$
'',$!#/+
Z.'',!-
#=!-.$#*
A&'!-=!-/!-#Z.
:*,@-
#.#$%/
#!-&>&B#.!-%#=!-.,#.,=$#.,=$#.,=$#.,=$#.,=$=!-*=!-*=!-*=!-*=!-*
=$!-)#$Z*4'd*Z!*#*-!=$!-)#$Z*4'd*Z!*#*-!=$!-)#$Z*4'd*Z!*#*-!=$!-)#$Z*4'd*Z!*#*-!=$!-)#$Z*4'd*Z!*#*-!
)/*-==!-#))#.)/*-==!-#))#.)/*-==!-#))#.)/*-==!-#))#.)/*-==!-#))#.
?*#!-)#$Z*4'd*!-hiji-
k lm nn
#**%>'Z.hiop-
] k q
##)>'!,Z*#**%Z*#=,hiorsot-
u v w x y z{
>!"%-/:|=!-$)*>!-,,%$-!,Z*#**%Z*#=.,hiot!-)#$}-!-)*>')*&Z*#=>':'*'c$!B-/:|=!-$)*>!-,,%}-!,Z*Z**hioj#*hii!Z*#=,!-Z*#=#*!*_!Z*,$@##~ m l!-%#f
-*/,(*%/A#.'-*# #$%#)#.
~ v v zm m zv v v ly lzm v !-_!Z*,$,>'#
#*.-/m y z!e#.'#*?*#!-%
!-)#$!-hiih)*#)>'#hiir
hiit-?*#!-/!-] ] y
*/>'# m lv zy n] ] y +%!-/,,
hii#*hiii-!
lzm m
!-*+$$!)*/$--!,Z*>'#Z*/;$/-=
] zy y ly
#$,
Z*#$#*=-Z*Z*#$#*=-Z*Z*#$#*=-Z*Z*#$#*=-Z*Z*#$#*=-Z*#=#*$#+,#*$##=#*$#+,#*$##=#*$#+,#*$##=#*$#+,#*$##=#*$#+,#*$#'#*>'#!-)$-!-)*>'#*=-'ZZp-#*>'#ZZ-*!/;4'$*%Z*#=>'#!-)$-!-)*,
#*.!-=!-$g-*)$#/
)*!-=!-$/4'*)&
!-)#$Z*4'd*ZZi-**Z.$'-!,&`*
#$;;!-#$$b''d*Z*#=,
'#*>'#Zhh-#&`*#$;;#**%$!-)$,g-*)$#//4'#**%=!-g-*)$#//4'#**%=!-g-*)$#//4'#**%=!-g-*)$#//4'#**%=!-g-*)$#//4'#**%=!-!-%$!$=$-!,#))#.!-%$!$=$-!,#))#.!-%$!$=$-!,#))#.!-%$!$=$-!,#))#.!-%$!$=$-!,#))#.A-#/+cb'=-b'Z!-#A-!,b'A$*>'#b'(*b'(*)&*b''d*`*;#*/4')!-!-hijr#*hijj!Z*#=,hijj#*
!-!"/#*)*>'#/4')#
?*#=-#.p-##.
A-$$..=$/4'A-$$..=$/4'A-$$..=$/4'A-$$..=$/4'A-$$..=$/4'
=!!-,=!-##Z.'',=!!-,=!-##Z.'',=!!-,=!-##Z.'',=!!-,=!-##Z.'',=!!-,=!-##Z.'',=B-!-#=.#.b'=B-!-#=.#.b'=B-!-#=.#.b'=B-!-#=.#.b'=B-!-#=.#.b'_!
v m v
##4'#!-4'##**%'#*%'!*!")(+/$$)(-Z$!+!-)&--$-!-/!-4!"$4!"/!-$&$!$$!/!-!-)&-##*$#,=!-BA!-/#/)!-+-$$%##&.#.#*?*#!-%!"/#*>'#'!-!-#=Z*#
$+-$$%##!-&'/!-!-
4'##**%&' v m v !"+/)($!
=!-BA!-#$#$.,!-%#)).,
#*.'$!,!-#*.'$!,!-#*.'$!,!-#*.'$!,!-#*.'$!,!-
,=$.*%=$$%-#,=$.*%=$$%-#,=$.*%=$$%-#,=$.*%=$$%-#,=$.*%=$$%-#
),!-%#/),!-%#/),!-%#/),!-%#/),!-%#/
4'#),!-%##.?*#!-%#*.$!B#/)!-$/#&4'$!.,-?*#!-%/4'!-,!-&)$#*?*#!-)*!-/#!-?*#!-%-!$%!"#.Z#$-!-!-%!#f#*.,#*.$!B?*#!-%!"/##$)!-$/##$'!->'#!#f/).,
,'
7/28/2019 Chin World Journal No(7)
11/24
0134567809
!!!!!
"#%&
'(#)*+%!+%
,-./'%2!)
#(/%)!#,:;%='-?#:;%
7/28/2019 Chin World Journal No(7)
12/24
0123567138
9
!"#!$%!&'()*#(+!"#!$%!&'()*#(+!"#!$%!&'()*#(+!"#!$%!&'()*#(+!"#!$%!&'()*#(+
,-./0!1#2,345#2/64!$%07589:;(!!(A;D+)?#++(:b+;D@D+#?&+lD@$))?
7/28/2019 Chin World Journal No(7)
13/24
0134567809
!"#$$%&'"(%)*+$(+&",-&.!"#$$%&'"(%)*+$(+&",-&.!"#$$%&'"(%)*+$(+&",-&.!"#$$%&'"(%)*+$(+&",-&.!"#$$%&'"(%)*+$(+&",-&.
/!*0"1.))02&/&)-34%-'#50&"5*/!*0"1.))02&/&)-34%-'#50&"5*/!*0"1.))02&/&)-34%-'#50&"5*/!*0"1.))02&/&)-34%-'#50&"5*/!*0"1.))02&/&)-34%-'#50&"5*
-46#&4%#--(,7#)85-&-(9':!*#)85""9'--46#&4%#--(,7#)85-&-(9':!*#)85""9'--46#&4%#--(,7#)85-&-(9':!*#)85""9'--46#&4%#--(,7#)85-&-(9':!*#)85""9'--46#&4%#--(,7#)85-&-(9':!*#)85""9'-
)85-&&;12((.&!&$$%=$)!%E+',-
,-&'C%(.H%,->H%-'+&'%%&(+%%%&+-(,
"()(
7/28/2019 Chin World Journal No(7)
14/24
0123567138
9
!"#
$#%&'&())!(*!++,-.-#/.!("*$#!4))-+!4.#)+!((*&)*/:!,;
!!4. ? A+,-B.)#.
#C!4.))
B-
7/28/2019 Chin World Journal No(7)
15/24
0134567809
"#$%&'()*+),-).,-+/2(-"',"#-%$.#-).,-(.#2"#$.:#(/*$:#';2';,,(#(D-YG';,2#D/#(#,">D-YG';,2#D/#(#,">D-YG';,2#D
"';-B$-+&"A
l;(-';(n)F=';
-|'$|'$DD$'$'
/F$:#-#-h$:#-h)F+)$-"'+';,"$-$:')F=E$:$Xn"$-h/,=/,=,-,-)X:.,$:l;#B,+$,2%D-(:#';
+/,-B;/(/-(#=
$E+)#-';,,X#-$.#-';,,X
#/#:,$.#-+/%n
B$-?
s [U QKt u TPy KtT
Al;()*(*X;-"F().',m2(#,=(+$$#';n"';-B$-l%(#X;-q-';#(+/#D-'-"'"';-;/).;o/(-2#-(#,-$"#/(-/F=';,
($#,-:,$d|D-$.#-h
G;|D-$.#-';(-).2C/D-+/
(B#,";(#Y(m#
%D$q2%##(/-)n
/)F=EB';|D-$.#-h
G;|D-$.#-Y#B%-$-
$>D-'-"'#B$-(/(G';+/#-C/D-B$-(-).2(=.,=(->/(G';
;/'$-)F=E>/(G"
&Fn"-)F=(#+/(B#,";
#B%-&Fn2);+$$#
';,,X';+/%nB$-$.#-(-
).2)n/(-D-$+&"E
+$$#';,,XF=';n(#&X=C&'x-D-$+&"E';n(#
&XnC&'x-';-(#';,,X$.#-,
.,=X;-(d(-,2"$-(D-;/;/C/D-(+$#;',(#(#,B$-?jA>D-)dB#-:.,'2(+$#B$-;';/$Fd+&"(%l;#;',,X#,$:EB';F=';=(#;/$F=$.#-';$+&"$((:.#=).(/'$=$E(#);'
().#,"':'(#h"(=?A
#D+/d(#,;/$;/
(#B$-$.#-|'x,'
B#-$:;X.'$=$E+)#-
"&,-:'
"';-T{ O y TPL w TL W';=
).D+/,)+&" (m#%2%)X"#-((#(#,=+/%n(-#(
7/28/2019 Chin World Journal No(7)
16/24
0123567138
9
!"#$%$'#
'()#*++
",-.%#
./(&%!+&
4&/
++.-:'+&
%'#
'/*;--:+++$/-:+-:-+)%&'(+
.(;(+(+)E%&/?(,+#/?/(&%!+&+++'-#>4."##4E&C@%+#-$
@F:'
?@#C
?++++&?(
&&
;%!+//'
>##
?.??(#-+'/#@.F&/-:$%&C?*('(;,-&4/+#-/+G>H#CI(J'/%-/
/&H#(J
&(/%!++$#--:
('K%!++
+ +)"
(+"%&
(&/&;
LM N O P Q Q R &C
'/(?/&(/-+H#J'("H#CJ/(=.-&!.(H#CI=I(J/+/#-
!.;(%!+
&&>
/(+)(+%&'
. ;;(
+'(&(
///('
+#%&(("$4T$UV'=#($/-!-($W($/?#-($!($!('&H#CJ/((=(*>(#%#
/4*$(
W+%+("/%
%!+&
>%
+&X(
(&(?Y"!/
+G*&((!/((%&:!&H#@Z(J+##-+#C[&\%&?@+F&(&+##-#CH#J/("/?HJ&+C/-H#J
/@("-:+
(!(;.(
'(.&4
;'(!/(+!/..?]&%&%#%!+&%&(/H#Z(J?&-F&,%!+###-H#(J
*F&%!+
+G-#-+%!+
F&$-:(
)-)*/?F:-
?+#%!+&F/
-/'&&(!
%&(/!/#--$
)4,&+-
-&%!+#@./
(!&&/"'(+&/""+?]"&((/&'&&$&//#-:*
((?&
&C#%&+)';(+$"??@#C!&(>"F:
/-:
('?%
X(/?
;(+(%!+',&'('#H""+J$
.?@@%+,>&C/
[&\$/*4
/-:;(+$
)-=/+!$!
"!@$#-+%!/&/%%&-/4(/+%&%&?A#-$#-!$;(#C.@/((((;?@#C#?
*&"
/(((&-+
%!+&>
H#Z(J4/-:
%!+#&;(
%&?(E(%!++#-&
;;#(;;#((+)%'#(,/?/#-$/?/#-?"(#->
-(;,&
I"IAhB-(
/&&"
,/++"
H#Z(J
#Z([?&+
/""/""/""/""/""
/""
(
4#-,/i/&>H/-:&-?#C,CJ'(?@'&A#-,/IjB,)H
7/28/2019 Chin World Journal No(7)
17/24
0134567809
!"#$%&
"!'()*
+!%,-%#(
()./2
'!(
(!(%!)!)
#(!"!()*+
()!:;%=()2%$2!
2%2!$;$.
%!"!>.
:)%")*!
%2*+
%,-%%()
%;%#./!#%
*+=%;%#..)!%*!.)2;(?/)(&,.')!'!$.@%@,A)$)!2;(#$%$/!).)$!%B.@%!%
$%%!.$2>'(>
=#=!!%)"!)!)
2C 2!)2*
+
$*:)
'!(;";A
$:)22$2$2!'!$.@%@/).)$.!( * (!%,>!$/(>"!2+$>%!)#D(!E%
:% .)
$.!(#!,
%)(,!
DFGH(!
!"!*+
(!!&>:*
A2FGH="/I>#$(#)$;$!;D'JG%2:)(.>$(!>%;!!:)%#(#!(>/K=
#%*+%#
A.!%L!M$$)
!;#)!(!2
!#%*+
'!(>!A(>=!!)!!)"!!2>!2*+$%!$'!D%
"!)))
A.,2)$#
$!#==
:)$%!.
=#)%2)2*+
$'!(D%=*)2#,,2#!.:''!2$22)(%2*+!%,-%%=(!$>%!)!)#A*
#%#;*)
*+
!)%),.,
'>!)%)F%H.'!(
!.!=>
:)2,.,'>
2$#.:'$=!%.=!.)2;&.@")2)"!=$=$=%!*+$2(!!>("!%>*)$2)
!)%),.,!)%)#
='!%#;
*)#%*+
''!
$.@%@.)!
%**)'(!%
,%;$##)"!!)$(!*+2!"!'!$.%@A$!%=2;(=2'.)!%*A/!))>%*((2*+
.)!%*
$'!$.%@
'!#>'!%$#
$2( ")
.,K.!
*)%!)%!/!)*+
);%!,2)((.)"K%!*"!!)!);$.2*+&,.')!;.)!%*
"!.)2;$!%
$#&%=!>
;$2>,
$%*)!>
*+
D'JGa
"/I>#AA2"/I>#>A*+(>=%.'!!=)(2)(%!%!#)#)))2(>$
>$(!2*+$,.')!)$/b!:;!#">%%)#'-%!>!!))>*
+B2;/)#"!
%)%!)!)==;%2!#.))($2!">2
7/28/2019 Chin World Journal No(7)
18/24
0123567138
9
!"#$%&'()$*+,
-&.'/$/
%/)'#/!./.
+,'()4+%&'
+.%!!/-
(+*+,(+&.%%&'
!+...,:/../!
:/&$+;.#:/.
?(+!..'+;
.#..
./++>H%+/+H%+/(+.'(++&/)/!%,
.'/-->
))/!&(+#)*!
%&'*&)'&.#$HT;,,.%
>$*+,..>/''.+%,
.*+,&.#
&$./-.'/.H./.%+;-.'&
(+(#.#>/+>$>.-&;J.'.
.+/!&U.V+H
.%:).%&'
'#)/!++;..#
7/28/2019 Chin World Journal No(7)
19/24
0134567809
!"#!"$$$%&'%("$)!&!*+)&
!,"(-$$!"
&./$%$(%"$!
,&$2'%$$)!#(
&&
$(&%/$,2
!"#!"$2'%("("
&./$,2%$(!$(
2!,)&
:; < =>?
)(@()&!A%B(B($(!+$,"(-$$$(&!$("$!"&./$,2%$("+!%$(!"#!"$'.
!W%X(Y(
,",Z!$.$!("%/[%(/(!W%,(&!AX*+$&!(Y(!Y()!!(($'("&((\."&(.W,$!"&2'Y(
!)!"&./$,2
%$&(#
("@!"&2($+2'W
*$Z!$.)])
Y('$
(-*"$2'
%(($'&.$Z
("$&!$"%$.$.$&!$!,"($#(!W%*)B(&!&!#""$$Y($(!]+(*$2'%#","$)]Z$X(",2$A$(#2%%2.(
(&!%Y(+(,!(@(
*+))\)$#@!"&!^
*+)*+),,W*+)*+)$
&!(,"$"%2(
+(((!")'.
$(!2^'&"
*+).+(*$2'%($'
''&2$(&',Y($.((2&($',,&!$.$2')A@_$2^($,2*)_$(!&'W),"$$Y('%2W)_$,2(($2(Z!$.%%!"%()2$
($2'&._&!"$)!
X"$2'%$)(
**&!!,".$!Z
(!@a(!%,"%@&!W
",$2'%/$#2
$!@_(!#/@!"Y(
'%#","%/$Y(#2#$&),("%"A@A@_*$&!!$%Y(","(&(2@Y()%2%,"
$(.$!,2($(!
b< : ? < c
!A+!*#(Y(.&!2($,2
+(*_d(!%*),$2'
.$!,2e$2^(&
$(AY(,$
#!&("
2$%,(($
(!2%*)B(B(*"W
($($Y(
$'*,""#"*".$$Y($Z&%@f,,@!"$Y("(+&
h i j>< c k < l : ? i m< :
())]$2'
n o p i >q r i =o : o ss t =i : : p
$)!(!(-$(",2'
$%2"$"
Y(!$2']%,,(*$.*%@)@)(%_#W$'B(/A&!(,$2'\%"$)(!#$&),*)_$(!"*,(Wu@)%$%$"$B(/A,$$2'(%+(!$
$2'%_@)_\%+((!
$$2'%_$)_\%+(
(!$&)%",!(@(W
!("$2'%_$)_,A,)(
!+!("$2'*)_$(!
%,(.$2'($
((v&Y($
"$$*&./$#(!W%,(B(/(Y(&(-$(.$!)@)W/(W/(%,((W.&Y($!Z!$."$!$2%$&$(-$!%+$Z
).e$2'%X"",2'
Y('$*2&$
!,"($2%$.
()W")!\
*v\(!",2'Y($
%2&!%,((W.2'
Y(&!%#",_$*"
&A,Z$.."@!)!2(&$(!$")2^"!AW%,($!(Y(!2&!$)$)%$.$.(Y(\.&2'Y(W($($%,(($%*"$.&!^%()W),"!A*+$&!(Y($&2
$",*/&!W"
(!)&$&!(,$2'%(
)2'$&
"$"(!#
!A,($2' i =s< :$!e
"@A(%)%,(@)
*"*/,$(.$!$,$2'"$,2().)!A$(!%,,$$$"2'Y($
w =xy i sm
$)B(/A&!(,$Z))%"@!"&!&!$2'2*+)Z
,$$%B($),&()+(Y($2'X""@z2$2'.({XX2
|XXXY(",(|XX
%!$)%!|X&A
&(A'&!.(
#$.$,"
$'$)($)&A@_
&((Y(
&.*+v$(%!$
!&',Y($%2"$($'",%!B($"&Y($"}&'(!(".&$(%!A(&!$!",((W.&&!,,"X.$$d'
#&!,$#$'
2*+)*+)w =x
y i sm(~t sb l =so < ? =: j
: p soi m: p m o o i =m< l mo ~
&!,2'$%#"$%$((2&!#"$W$'
i ==o
2^
t l b
(!$!,2'$&%$,*+)@!",$
~q : ? =: smi: p ,($!(
(-"%!,$)(!))!2'+.$,$!%"*"&!#"&.("'"'&"&"XA$#".$2''%,(.W!(,W+)&',$2'&."$,2%]d#2(!&.B($(%,((!$!(+(+!
B(/)$!$2'c oss i p o
,(&!,,".",
(/$2'(-Y(+.
$($,X",""$
"*"Z"!)(!$A
+"$2%$.$.2$2'
%"*","$".$!,2
%#!$_(!(v$("$(!&&!$#(),"$)!!&!Y('$!("$&!(-#"$+&(
h i >< c
k < l : ? i m< :
,2%*"$$)!$'
l =o l
(
%,(*+v2^@!""A**+)%,(
$(!#())X!"2
%)#!Y()!&!@!"
@!"@*""!AY($(!
(-#"2'+.$
.$!,2%Y("*(($'
))X!"Zl =o l#((!
@a(,%$(!("$W$'),%,@!""A*($""$#(#((!])"'$)*+"''%2@2
l i t i>
$"*$(!&($
h i m l
))X!"&!!A2si mm)),
&!^%($$Y('
(-$!^!A$(l b o %
2Z!$2.@!"$2'X!"%*+)
(&',Y($'si mm
!$2'%!A%@_(&_
&2)@!"$h i m l
&!!A$(!W"&$$2'!.."&!($2'.$)),($!W.(!"*&!&,\(!(!(!&+!&(@!"$'
"$$!(X"*2'&)$(.]2'$(!%!,*
'&!))X!"2^%)
#!,&2",2!
!!(.&*(!""
*(!(&',
$&$&$&&&
$",$2'%(,"(-
",&!,"t < l =j
sm
$(!2,"%,(.,",*+)Y($2'("&$(!$'@!2$(!$'%2
? sb < l : m
2',"'%2&!&!&!(,"
p o : ? o = ? sb =c : i m< :
*+)$,&2
)$(.#2$'%,(,"
W!(A,,$%"(!*&!&($&!,2&!"$%,(%&%(-A(2'Y($*/,$Y("'("$2'%("(!d$)&z$&!(Y($(($()W
*(Y($%!
$(&!((Y(W
%&!A%,()2(!,""
$,2%$!,@!"
$'($2'.
%""$)(2^$)
(&(/#!%*)
$"&!%(/,&2%A2^X&!&!2''@)()&!A(!%*)d(!A2'Y(,$2(!'".W$'!"#!"$$!^$!(* ,2%*"d*,2%,"A(&.$2'"$
).*"$$Y(*"
2*+)$W$',2
)$@#/@!")%
W%$'$!")
.*"(,!#(@!"$'
2)Y(*"
(-B(*"$2'
%(%"$$
bi c : p b i c i p :
!$2')(&!A(!(-B(/($$)$2'%%,($%$(,&!#$2'
bic
$&,,2
bic
$%W($"W")$,W&!dd(AWY(**
(Y($2'.$(!Y('W
$)!!$&!A)
$(-$!!$"$\
$,Z$$(!,W
!,,2%A(!#"Y(,"
(!Y(,&2."
,&(!A"&'B(%#!&(&22&'!$/&*+)@!"$$Y('$,_,_,_,_,_
c b c l : p p c i>xb< c
,_
7/28/2019 Chin World Journal No(7)
20/24
0123567138
9
!"#$%
!"&'"()
&!&&*
+(!"#,'-.""/+(/&"()(/&!"&+-."/'*4*4"("!&&+!'(:&
(;(
/&
7/28/2019 Chin World Journal No(7)
21/24
0134567809
! "
#$%&'()*+,-./#$2)$)))&.):;?*>%
,,>
@>%AA&=-
,$;$-,$B)$
,;)$C D E F D F ! G H
I G J ! K LM N D D G O L G
P LK "
2)$))Q#$=;%>#$@>:A>,.RS#S'T$Q,2U,B;)$%)$)
B)#%$A)$Q>:*,
V W X LL"
,
X W !
=Y()$$%$B%$BS=;%Q%%Z%$;)$Q#,)$>:Q[,)$S)&>:S)&2)i%U&)$>&^$QBU?[,B)$
Q& @]'@&)
))$>$$Ug%
S)$>$;Ug,##%
>:B))$>$')%
X G O ! KK c G "%U&,Ug
B),j$'%
N `! W W `!L G "
&Ug%#@@)%,#g[,SQ@]))$>$$,)$>$;Ug,##%>:B)%%U&>%S?Bk&&;$
,2)[,$#$BU?[,
&_ `a b ! LF U&%
ASQ,>>$#
lmnopnqrqmstulwqtxytmytozm{olro|wn}t
~qmstlnotr}twumytozqox{r~}wtmttw~t
^S$)$%U&%Q[,)&)$>$$UgSg^$%Q#$B;BU&
B)$Q&,,
[,$BU&@]
>&Bk#)>
Q#$Q#$&))$>$$,)>$,>,,%$S
>:#,@)B%#)&
^)$%[,,&))$Q#
S@*:$]
zwutlq}t}qom{owtytlzowu
|yolrqzlqtlrq
,2f$,[,
S*,,+)$Ug i
#,=;%Q2)$%
,:>S)[,$2%BU&
>?)=;%QS*,k,;%)B)$S>$[,)$>)$)$BS
I K d ! ! E `M
>&[,$BU&@]=;%QUg$=;))>:Ug>#,@*,2>#$,,
*,,%S#U[,$BU?[,
&^@]
>:B;$%^)
%,jS^&&Q@&
U&*,k
)Q%2)[,$$i
#$S%@]
2)$))Ug%,;[,$$jS)(,$
,>j))$>$S)?)$>$&Ug*,,[,)$
)$)'@,A#%$
c J E G ! "
B$)#$%&.R,-
.//
#$2)$%))
:;%S)[,?B)$-
^),$B)$- LL!
,;)$
C G H KLI G J ! K LM G L!G LG `N ``!H ! N D D G O L G P LK"
,BU&>:Q@]-2,%[,)#)$>Q#S@)> )BU?f$%,
BSS2 $@)>
^)BU&&U F ! J ! D
S)(,$\,$S)&
2)$))S>,*U,&
B$))#S@%$$
BU&>:Q@]^@
(,$%U&U
LF ! LF N G ! D G ` G L! G L G ` `D ! KLJ `
S$U&
V ! KL
P O L
^,SBU&@])$%,S),$\,$@)$S^,; ,,,,:$BU?f$%,,SS>Ug
BU%,$$iS%U&
X ! ! E X E F G G H
U&2)$TS)S@)
> )BU&Q@]
G W a a X ! K c LO F
D ` %U& G M _ O KK G SU&
,,;,%^##,,$S[,)#,,:$2$f$Q@]
#%U&))&,;,f)f$,;,>%U??U&S)S)-*=;>#$@2)$)$>$$
)'@,A#%$,&,S
SX G W K N L! X ! KK%U&
PSU&,,;S
,%;$)d ! ``O D
b `! b `! %U& E G
N `X SU&%$
Z$[,)#S@@)> )2$>:Q@]>($#UB%#US@)> ),,:$2$f$Q,
X ! ! E X E F G G H
S)(,$\,$,&>:Ug',S)Q@]>:A=Y()$@)$;$#Ug;,SQ$)S)QQB)$
BBU&f$,SS2)$))
#)$>Ug2,B
$$i;$$S2$>:
> )Q%
@]
)>)$#%
$)>
7/28/2019 Chin World Journal No(7)
22/24
0123567138
99
!"#$"%$
&'##!'()
'*($+,-*#
*"#.$'"$/'/"'%$4**('#-*+*':$4"$""#$#;##$$>*|$
{#'#>(""
''+#"($|"#,-*#"'>*$$t#"$>!($:+*"
#}#|#v|4
*#!v'+x"=*::>'##"($:+%4"$($""#$u$
+x~':$"
:+$"+{#u$
#}#|":+$u$
|4*#+$("#+*|$-'#!u$($"
KeNOPaOPHNMYPXRMaRjPRYPhUPTjbQd_NQK[QOhURN
JNTUjhUOPRPXKONPQJb[ePNRNK[QKVPQKSNPahUOPa_ePQ
#*+$"#$
'$'%
$/#'|"#
'#'##+#'|#
(#=y'#'
'##+x#"*"u"*|||"$v>|u$#'$;$">=($%##
$##:+'$
%'+"+'
+~($||"+#
z+x%##!"#$#
*"'"$+#
"'(+
:>$$&'
($:>$'$-*"$+|-+##(+"+x'#
'~"'"$/(
+#($#+x'#($
%#+#||
${()#($(|:+$
$+$:>+x
'#+x~"
|#($/!'(+*~"#"$*##~u$t(+$+x'#~"#("+$"+'"
7/28/2019 Chin World Journal No(7)
23/24
0134567809
!"!#$%$&'$()*#+,-#.'/&(&.)'2&'$%#$!%%"'!&%&%$(&'2#!""/%!-'$#
''!
-!'!&!!(,
'$!.%(!!"
.)'2&'2-&!#
2%-)!"
!#:(.;.#-?'$'2-'%-$2%2+'!'!&!!(,'$!@!-)%A'2-%#!>B!'2-%#!%-(&
-$
#!#!-#!
-$C2&!.2&
#!.#-?'$!#=
!!(,'$.#&%"%-#2%,=D#%#!(#'#!!(,'$!!;$!!%'2?.#%":(.E$!'+!'2!-)!FF!G'#+H!!&'('/(()
#!!!(,'$!#'.
'('/((,!,
.#+#!#!-#!C)+!?$&
/#&&'(!###
'!!='/#&,.#+
!G'#+,#!,
HI'#$)*%.#J(C!#2$.'$!,KK.#+'#'('((&'$L#.-?HI'$$!%!'2!-);M-#/%(&'#()*&!%#,/#&&>&!!($!#!
NOPQRSTUVPWXVYZ[\QOPT_VPOPQRabT\cdReP
ZfgOP\QTQbhRZ[\ifRjQk\clT\ZmnToQT\
#!-#!2-&2&2&
-%-)$%/%!(&'.&?*p#!!!(,'$%&%-#!#!'&'/#&-);qq-#/%(#2%#'!&(#!!!(,'$'r.%%$/!!!(,'$
##'&&'%$.!
'(*%!%-#!#'=-)!'#!!(,'$!%'(&'##!-#!'$()*&;qE-#/%!#($/#&&(!-('!%A(&'#>%$&
%(!'2&!#
'!-!(,$,&%$!-#!'$%$)'H(&'.!&'$%&(&'&!2%
s tuw
x yz { | }
D#/#&&&I/%!(!-(-(&$)/#&&(&p'-)$''$!%('$.#&$&%":(.~$!'+(&'$!
/#&+2(-)#$
D#.=?'$!/#&&
=:$;-#/%
!D#/#&&(&.#'
!#&!%('$.#&$&
%">!#%A-#,=
'!&%()-!2&--)$;q-#/%(&2..('2!.-)'.D#2#+-$(.-(&2%2-&--)$'$!%#$!=+'$!2.-(&'$'-)'.D#%#$!.!--)'-
=:$,-#&!#p'$!$!#/&D#$!&+'(*#,-#!)#+'2-(&$$
-)2-&2%%A=
-#,=.?*
!!#(,'$&,C2?
.#-)'!&%()-!2&'&
HqM.!--)$=.
2%'$!#+2
.'$!$.-)2%'!&%A=>%#!2?'2!-)D#/#&&2-'$!@'2-(&$#?.'&.!.%A=!#=+/#&+2-(&'.#!2%'!&&'!!#'2!-)2-&2%s t uw
%%!#&$$
=!%"!!,!$&>
2%$'!&(!#C!#.!--)'!-);q;-#/%!$q
7/28/2019 Chin World Journal No(7)
24/24
0123567138