手持式风钻 [机] jackhammer ; hand-held air drill ; hand drill ; held air drill
手持式风钻钎子 jackbit
手风钻
Air drill
以上为机器翻译结果，长、整句建议使用 人工翻译 。
蒲石河抽水蓄能电站引水系统中的竖井开挖，拟采用反井钻机进行导井开挖，人工手风钻钻孔扩挖的方式施工。
The sequence of excavation for the shaft of diversion system at Pushihe storage power station is to excavate the pioneer well used by back well boring machine, then by hand air drill to expand it.
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