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背锥
met. back cone
railw. back cone (锥齿轮)
阶梯轴背锥
gen. backslope
锥齿轮背锥
auto. back cone
卡瓦背锥
dril. back taper
背锥: 15 phrases in 5 subjects
Automobiles2
Drilling6
Latin2
Oil / petroleum2
Technology3