39
4 45°
5 36°
6 30°
7 25.7°
8 22.5°
9 20°
10 18°
( 26, 27, 28, 29)
( 27)
( 26)
28
:
x
“A” (
29)
x
x
x : 4 25°
( “A”) ( 29) 25°
(23°)
(40°)
( 30-32)
(1/4°, 1/2°, 3/4°)
1/4° (15 )
24 1/4°
x
x
30,
31 24°
x 1/4°
1/4°
25° 32
24 1/4°
x :
x :
45°
x
x
1.
2.
1.
2.
1.
2.
1.
2.
31.62° 33.85°
52° 38°
x
x
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
0 5 10 15 20 25 30 35 40 45
05
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