词汇	drilling unit
释义	drilling unit 钻井装置
随便看	single effect evaporation single-effect evaporation singleeffect evaporator single effect evaporator single-effect evaporator single-effect still singleeffect unit single-effect unit single-effect … single-effect… single effment wattmeter single effort singleehip single ehip Singleehip eomputer single eight millimetre film Single Elderly Persons Priority Scheme single election single-electric conductor single electrode single-electrode and dual-channel single-electrode discharge single electrode plasma single-electrode plasma singleelectrode potential