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jack hammer drill
construct.
撞〔冲〕钻
expl.
手持式凿岩机
用手握持,靠机器重力或人力施加轴向推力进行钻孔的凿岩机,参见 handheld rock drill
tech.
撞钻
;
手持式凿岩机
;
冲击式凿岩机
;
冲钻
;
手提式凿岩机
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