英语词汇“deep mining of coal pillar”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	deep mining of coal pillar
释义	deep mining of coal pillar 基本例句深部开采 Most of large and middle scale open-pit mines in China have reached deep mining.摘要我国的大多数大中型露天矿山已经或即将进入深部开采。
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