pneumatic rock drill meaning in Chinese

风动凿岩机

The design of automatic testing system for pneumatic rock drill
气动凿岩机性能测试系统的研制
General technical condition of pneumatic rock drill used in coal mine
煤矿用气动凿岩机通用技术条件
Line oilers for pneumatic rock drills
气动凿岩机用注油器
Rules for the inspection of hand - held air - leg pneumatic rock drills for export
出口手持式气腿式凿岩机检验规程
Pneumatic rock drill
风动凿岩机