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机械式挖掘机
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机械式挖掘机
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铲土运输机械
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mechanical excavator
机械式挖掘机
依靠履带以自行的方式进行牵引,具有可带着工作装置作360°回转的、由钢丝绳或齿轮齿条操作的上部结构,主要用正铲装置采掘矿物、剥离岩土并装载至运输机器或卸至堆料场的土方机械。
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maritime safety information digital broadcasting system
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Maritime Silk Road Museum of Guangdong
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Maritime Strike,1890
maritime supervisory authority
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maritime traffic safety
Maritime Traffic Safety Law of the People’s Republic of China
maritime traffic works
maritime transportation in the Yuan period
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Maritz Government
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Marius the Epicurean: his ideas and sensations
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