(fig.1)m:0.5 unit:m/m
bianhao.
chishu
waijing
zhongjiankong(0φ)
houdu
a
b
d
f
1.9φ
2.05φ
2.4φ
2.9φ
h
l
1008
8t
5.0φ
·
5.0
1009
9t
5.5φ
1010
10t
6.0φ
1011
11t
6.5φ
1012
12t
7.0φ
1014
14t
8.0φ
1016
16t
9.0φ
1018
18t
10.0φ
1020
20t
11.0φ
(fig0.2)m:0.6 unit:m/m
bianhao
e
g
2.55φ
3.05φ
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