hammer r drill锤钻;凿岩机
pneumatic hammer-drill风动凿岩机
air hammer rock drill风锤钻
hammer hand drill手持式凿岩机;手持式风钻
air hammer drill风动凿岩机;风锤钻;凿岩机
jack hammer drill手持式凿岩机;手提锤钻
light hammer drill轻冲魂;轻便凿岩机
hand-hammer drill手持式风钻
SDS Hammer Drill四坑锤钻;电锤钻头
N（名词） a rock drill operated by compressed air in which the boring bit is not attached to the reciprocating piston 冲击式钻机; 钻片不在摆动的活塞之上，通过压缩空气操作的岩石钻机