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	super widefield condenser super widefield eyepiece super wide field trinocular tube superwides superwife Super Wi-Fi superWIMP superWIMPs superwind superwindow superwindows superwinds superwives superwoman super woman syndrome superwomen superwonderful super woollen carpet super woollen machine-spun yarn superword superworkstation superworried super xga super X-ray super X-rays

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