英语词汇“四台矿极近距离煤层采空区下开采技术”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	四台矿极近距离煤层采空区下开采技术
释义	四台矿极近距离煤层采空区下开采技术 Coal mining technology for seam under above goaf with very short distance in Sitai Mine
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