hammer drill, percussion rock drill
hammer drill, percussion rock drill
[煤炭科技英汉词典]
hammer drill, percussion rock drill凿岩机
以冲击回转方式工作的岩体钻孔机具。包括“气动凿岩机(pneumatic hammer drill)”、“液压凿岩机(hydraulic hammer drill)”和“电动凿岩机(electric hammer drill)”等。
是什么意思,hammer drill, percussion rock drill的解释,hammer drill, percussion rock drill的翻译