
13 .
13.1
::1.76
:
G20 (2H) 20 = 2.7
:
G30/G31 (3B/P) 30/30 = 2.7
:220 -240 ~ 50 /60
:
II2H3B/P
:G 1/2"
:3
13.2
)(
)/(
)(
) 1/100
(
)1/100 (
G20 (2H) 20
2.7-0.7
G30/G31 (3B/P)
30/30
-1960.74380
14 .
.
.
.
.
.
*
21
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