英语词汇“pit bottom, shaft bottom”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	pit bottom, shaft bottom
释义	pit bottom, shaft bottom 井底车场；位于开采水平；井筒附近的巷道与硐室的总称；是连接井筒提升与大巷运输的枢纽。
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