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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
Automobiles7
General1
Metallurgy4
Oil / petroleum1
Shipbuilding1
Technology12
Wind Energy2