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起重螺旋
eng.geol. jackscrew
oil jack screw
起重〔千斤顶〕螺旋
mech.eng. jack screw; screw jack
起重螺旋: 40 phrases in 10 subjects
Agriculture1
Architecture1
General2
Hydroelectric power stations1
Mechanic engineering2
Metallurgy1
Nautical2
Oil / petroleum1
Steel production1
Technology28

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