Page 167 - ebook.msu.ac.th

,
F
8.4B+CD18[g@{40B4[6 Y2(ก D6H.j5?Z7B$H/B%,1i21Z7B$H/ a0n+?B@o1&/.4^DbGD%:$0Ba$]$.^B+^ D@ƒ.+
$.^/%(' $.^bFA$ 2?./B:[68Cbn@ 8.$A$. # /)1D)%&.$ B+CD1i@+ i$4Ba\+&g9. @{40B4[6 1)กp)A$ Y2(ก
!"#$#"./0/B?K X

I 8.$A$.:$06.a)ก$[($[D%&$)กp' 84F51.6กD)&$45.B81.b+[ D`)6:[$[b$ก$4:.5F 4.lk%:$0

?
X?
?
?
F
Ba$,]$.^B+^ Ba.B4CD% $.^/%(' Z/.2[gD@ƒ.+ 2?./B:[6B4CD%45.8.$&.4+/64[jbbDกj52?./8F/D 2?./B:[6
H
&F4BD.B%,1i21Z7B$H/a9.1/1@{40B8\% BDก(ก B@o1B%,1A$.8,b5ก^)g%i@+A.7k% &,+$.&.5.b705?.A.7k% B@o1
9
9
kf
,f
?
)
)
Z7B$H/51)ก5ก8,b5?.5.b 5ก8,b^)g%7%n@8H% ก)ba+n7H8[Z%51กi@+8,b^)g% Z.@X4$/8[g4?/16./8,b(Dก/.
j52?./8F/D 2?./B:[6 &47%n@2X7Bก7?.2X7ก$054HD4l/.6 i70/.n+A/%BD.&H.1.Gkf1q.%n/ 89.5$ba.6
?
F
?
H
H
)
?
X
?
,
$.^ก.$G?./B@7CDก8D%:)1l)% G?./8.$$D6l)% ก)bn+b/^:$0`กpF6[g8,b$@ 2D+กe18,b:$0D.$.4 GD
,
?
9
:$0$.^2.12X7Bก7?.2X7ก$054HD4l/.6:$0$.^กF(711 n+1.51%8CDbDกGkf1ก$.bb)%&42X7iA H
)f
?
)
?
F
\
)
'
:$0b.284B+a:$0@$4,12$45.aŒ.7%ก$#Bก7?.Ba.D6XH5/ :.2?./8F/D 2?./B:[6 B._F7[:$0b.2 2$%-

?
9
2$.bi7?/4[:$0b$4$.^YD%ก.$ +.$8B51DBก7?.B51Dก$054HD4 8)g%j5ADb4./.rkg%:$0Ba$]$.^B+^
)
C
H
C
,
$.^/%('Z/.2[gD@ƒ.+ $.^bFA$ 2?./B:[6 :$D4ก)1^9.$0B$%$+n+B%,1i21Z7B$/ ก)bA/%G?./Gkf1q.%n/a.6
)
X?
H
?
H
?
F
H
?
H
)f
?
kf
?
)
?
?
$.^ก.$ ก)ba+n+8[Z% Z.@X4 7%n@2X7Bก7?.2X7ก$054HD4l/.611^Db+/6$.^ก.$i7?/ n+2$%:$0
F
?
)f
X
H
?
?
,f
kf
?
D1Y421.8H/1:$0$.^กF(7+/6i7?/ i70B%,1i21Z7B$/Z.@4 $/ 8[Z% rkg%8H%7%n@11n+j52?./8F/D
?
)
,
?
9
2?./B:[6 &4n@8H%Ba.:1ก%.1^./:$0&7)%A$/a$b n+B%1A$.8,b5ก^)g%i@+A.7k% &,+$.&.5.b70
)
F
)
5?.A9.7k% B@o1Z7B$H/5)กj^?&?.%a9.1/1@{40Y$% 8)4c2_,(ก 51)ก5.bBa\+8,b^)g% @{40B8\% BDก(ก 51ก5ก8,b
\
8.45.b8.48,b^)g% @{40B4[6 Y2(ก 5ก8,b^)g%$/45ก8,b5?.5.b5ก8,b^)g% B@o18[Zkf%^)g%n+?51กBa+8,bi@+-
)
H
,f
)
?
^)g% Z?.@X4 $/ 8[g4?/16./8,b8D%/. j5$bn/ i7?/Z7B$/a9.1/1Bก#Š'6)%&?.%a9.1/1@{40B4[6 Y2(ก 5ก8,b
?
?
)
8D%5.bBa\+8,b^)g% 1)bZ7B$H/AD%:$0$.^@$08%&' 89.5$bADbi217Xก&?.A.%@$0B2( 4.lk%B2(ก.7A1
H
?
H
F
X?
,
?
H
B$/DDกZ7ก\j5:$0Ba$]$.^B+^ $.^/%('Z/.2[gD@ƒ.+ $.^bFA$ iAH%2?./B:[6&F4n:$HDDกBก\bZ7B$H/iA H
H
A?1c+ j5?n+?Z7B$H/a%4.ก iA%bFA$57.1 2?./B:[6&F47%n@8H%lk%ก$F%B2:45.1&$ iAj1B+D18.4B+D18[g
H
X
C
C
?
)
9
?
@{40i4 A$(ก a0n+j^?&.%a.1/1@{40B4[6 Y2(ก j5&$ba9.1/1D6H.j58H%B%1i21Z7B$/ 7%n@B@o1D1
H
[
?
,
?
'
C
G.+2[B+[6/ 8.$A$.4. # /)1a)12$ B+D1Ba\+ i$48D%&g9.@{40i4 A$[(ก ú

!"#$#"./0/B?K b
JJ
)
)
[
)
F
I 8.$A$.:$06.a)ก$[($[D%&$กp' 84F51.6กD&$45.B81.b+[ D`6:[$b$ก$4:.5 4.:$0
Ba$,]$.^B+^ Ba?.B4CD% 2?./B:[6B4CD% 45.8.$&.4 +?/64[jbbDกiA%j5$.^/%('ZB@o12[gD@ƒ.+ 2?./B:[6 &F4
F
X?
H
?
?
9
H
[
\
)
BD.B%,1i21B$/a.1/1@{40i4 A$(ก B%,1A$.8,bBa+^)g% &,+$.&.5.b705.A.7k% B@o1B$/51ก8[g8,b8[g5.b
9
H
?
7%n@8H%11 j51.51%8CDbDกGkf1ก$.bb)%&42X7:$0b.284B+\a:$0@$4,12$45.aFŒ.7%ก$#Bก7?.
9
'
)f
)
?
Ba.D6XH5/ :$0$.^/%('ZB@o12[gD@ƒ.+ 2?./B:[6 B.70DD%_F7[:$0b.22$%2$.bi7?/ 4[:$0b$4$.^
F
X?

)
C
)
9
H
F
C
?
,
YD%ก.$+.$8B51DBก7?.B51Dก$054HD4 8)g%j5ADbGkf14./.rkg%:$0Ba$]$.^B+^ D@ƒ.+ $.^/%(' $.^

=||
!"#$#"%&'()&*"!"#+"& (./0/+01#2"))