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车轮螺栓孔分度圆直径 fēn dù yuán zhí jìng
auto. pitch-circle diameter
齿轮分度圆直径 fēn dù yuán zhí jìng
auto. reference diameter
分度圆直径 fēn dù yuán zhí jìng
wind. pitch diameter
分度 圆直径: 2 phrases in 2 subjects
Automobiles1
Technology1