英语词汇“periphery hole, contour hole”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	periphery hole, contour hole
释义	periphery hole, contour hole 周边眼；在井巷工作面为控制掘进断面周边而钻凿的炮眼。
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