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单词	free-electron laser
释义	free-electron laser noun free-elec·​tron laser ˈfrē-i-ˈlek-ˌträn-  : a laser that can be tuned over a wide range of frequencies and that produces electromagnetic radiation by the motion of electrons moving at relativistic velocities in a magnetic field Word History First Known Use 1978, in the meaning defined above
随便看	electronic surveillance electronic tube electronica electronically electronics electronographic electronography electrons electrooculogram electrooculograms electrooculographies electrooculography electrooptics electroosmoses electroosmosis electroosmotic electrooxidation electropherogram electropherograms electrophile electrophiles electrophilic electrophilicities electrophilicity electrophone

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