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top drive
agric. 摇蜜机从上方运转
anim.husb. 分蜜机上部传动装置 (of extractor)
oil 顶部驱动; 上驱动
top drive
: 36 phrases in 9 subjects
Automobiles3
Drilling15
Earth sciences2
Engineering geology1
Mechanics1
Nautical1
Oil / petroleum6
Steel production1
Technology6