1)jackhammer,手持式风钻;"风炮"2)jack-hammer,手持式风钻;风锅(风炮)3)hand-held air drill,手持式风钻4)hand hammer drill,手持式风镐5)hand held pneumatic boring tools,手提式风动钻具6)pneumatic drill,手风钻
用法和例句
Application of the horizontal smooth blasting of pneumatic drill to the excavation of protective layer of foundation surface of Permanent Ship Lock in Three Gorges Project;
