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to phrases
woodruff key
auto. 月形键
mech.eng. 半圆〔月形〕键; 月弧〔月牙,半月〕销
met. 半圆键; 月牙销
oil 半月销
space 半圆开关
tech. 半月锁
Woodruff key
el.mach. 月牙键
woodruff key: 3 phrases in 3 subjects
Construction1
Shipbuilding1
Technology1