“closed frame”的概念、定义、翻译、参考文献-科学参考

单词	closed frame
释义	closed frame [¦klōzd ¦frām] ^{MINING ENGINEERING} A mine support frame that is completely closed; especially in inclined shafts, it is used to protect all sides from rock pressure.
随便看	nasal cavity nasal crest nasal height nasal index nasal pit nasal process of the frontal bone nasal process of the maxilla nasal root breadth nasal root salient nasal septum nasal tip height nasal tip salient nascent nascent ribonucleic acid n'aschi Nasellina nasion nasion-menton nasolacrimal canal nasolacrimal duct nasolacrimal groove nasonite nasopalatine cyst nasopalatine duct nasopharynx

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