英语词汇“closed frame”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	closed frame
释义	closed frame 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	aqaba special economic zone authority aqaba technical assistance support project aqac aq ad aqad aqae aqaf aqag aqahw aqahwci aqa khan aqal aqam aqam-b aqam-nb aqanu aqap aqaps aqas aqawqc aqb aq bull aq. bull. aqc aqca

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