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travelling crab

  • 小车起重机;移动起重车

网络释义专业释义

短语

travelling motor crab 电动移动起重机

overhead travelling crane with crab 绞车式桥式起重机

  • 小车起重机

·2,447,543篇论文数据,部分数据来源于NoteExpress

权威例句

  • Because radiation from the Crab nebula is so energetic, the electrons that created it must have been travelling very close to the speed of light—so close that the difference between the two speeds would bump up against Planck-scale graininess, and show up in the spectrum of the radiation.

    ECONOMIST: Planck-scale physics

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