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螺纹孔 luówénkǒng
auto. screwed hole; tapped hole; thread hole
el. threaded opening
oil threaded hole
tech. tapered hole; tap hole
wind. tapping hole
螺纹孔 luówénkǒng
auto. tapped bore
螺纹孔: 26 phrases in 7 subjects
Automobiles7
Computer numerical control1
Electric machinery3
Electronics1
Engineering geology1
Rail transport1
Technology12