词语churn drill
解释钢丝绳冲击式钻机,绳式顿钻钻机
词性名词
churn drill〔名词〕舂钻机,冲击钻详细»
churn drill〔名词〕掸击钻详细»
churn drill〔名词〕绳式顿钻钻机详细»