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分度圆
fēndùyuán
auto.
reference circle
el.
divided circle
el.mach.
graduated circle
车轮/螺栓孔
分度圆
通过轮胎各螺纹孔中心的圆
fēndùyuán
auto.
pitch circle
分 度圆:
28 phrases
in 7 subjects
Automobiles
7
General
1
Metallurgy
4
Oil / petroleum
1
Shipbuilding
1
Technology
12
Wind Energy
2
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