rotary drill with oil pressure
旋转伏特计
rotary voltmeter【仪】
暂无补充释义。
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barker of rotary-ring type【林】
rotary seal
rotary
rotary desk【油气】;rotary table【机】;rotating platform【机】
rotary-drilling machine mining, quarrying
speed gearing rotary-drilling machine with speed gearing for mining
rotary gyroscope for indicating the vertical