n. 开凿者,打洞机,开凿机
挖掘机
挖掘机
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- In soft clay, tubes of the extending type can easily be pushed down through the clay by using a mechanical excavator
在软泥中,可以利用挖掘机,很容易地把需要延伸的管子穿过泥土推下去。收藏 - The veteran excavator Richard Leakey declared in 1977: "There is no single center where modern man was born."
老资格的考古挖掘家里查德?利基在1977年声称:“现代人没有单一的诞生中心。”收藏 - An excavator whose bucket is rigidly attached to a hinged pole on the boom and is drawn backward to the machine when in operation.
反铲挖土机铲叶牢固地连在吊杆上的铰链孔中的一种挖土机,当它处于工作状态时,铲叶被向后拖向机器收藏 - bucket wheel excavator
斗轮式挖掘机收藏 - chain bucket excavator
链斗式挖掘机收藏
开心词场背单词


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