free electron造句
31. A method for direct measuring the frequency of a free electron laser using AC Josephson effect is presented.
32. The free electron gas is a kind of representative quantum Fermi gas.
33. The paper studies electron nonlinear steady motion equation in free electron lasers with axial magnetic field by the perturbed appro?
34. Frequency-resolved measurement of the emission from a Eaman free electron laser under superradiation condition by a microwave grating spectrometer are presented.
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