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单词 θ79242
释义
the world > matter > physics > atomic physics > particle physics > photon particle > [noun] > device producing beam (1)
undulator1981

Physics. A device in which a beam of particles is made to describe a sinusoidal path (and so emit radiation) by a series of transverse electric or…

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更新时间:2026/6/4 5:03:37