单词	钻机操作时间
释义	钻机操作时间rig time
随便看	mechanical ventilation mechanical ventilation drying mechanical ventilation--mechanical draft-- supply ventilation mechanical verification mechanical vertigo mechanical vibrating conveyor mechanical vibrating feeder mechanical vibrating system mechanical vibration mechanical vibration generator mechanical vibration generator system mechanical vibration table mechanical vibrator mechanical vibrograph mechanical vibrometer mechanical virginal mechanical viscosity mechanical--viscosity mechanical watch mechanical water mechanical wave mechanical wave filter mechanical wave generator mechanical wax stirring machine mechanical wear