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

词汇	zigzag-type pit bottom
释义	zigzag-type pit bottom 折返式井底车场；矿车列车在同一条巷道的两条或两条以上轨道折返运行的井底车场。
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