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coarse thread
anim.husb. 粗丝
compr. 粗牙螺纹
dril. 粗扣
mech.eng. 牙螺; 粗牙
oil 粗螺纹
tech.
textile 粗经; 粗线
coarse thread: 27 phrases in 11 subjects
Automobiles3
Chemistry2
Drilling4
Earth sciences1
Electric machinery1
General1
Mechanic engineering3
Mechanics3
Oil / petroleum2
Rail transport1
Technology6