掩护梁

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1.	caving shield 采矿工程专业英语词汇手册 - 豆丁网 ... rear canopy 尾梁 caving shield 掩护梁 flipper，spauling shield 护帮板 ... www.docin.com\|Based on 5 pages

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AllAll,caving shieldcaving shield

Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical

Source:AllAll,DictionaryDictionary,WebWeb

Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard

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The top-beam, caving shield , the foundation makes the packed in a box body structure ;