英语词汇“immediate roof, nether roof”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	immediate roof, nether roof
释义	immediate roof, nether roof 直接顶; 位于煤层或伪顶之上具有一定的稳定性,移架或回柱后能自行垮落的岩层。
随便看	lacteals lacteal sinuses lacteals vessels lacteal tumor lacteal vein lacteal vessel lacteal vessels lactean lactein lactein bread lactenin lacteol Lacteol Fort lacteous lacteprene lacterosporamine lactesce lactescence lactescence,-cency lactescence, lactescency lactescences lactescency lactescent lactescent plant lacteum

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