Here, free electrons rub off the con ductor and create a charge imbalance that causes the current flow.
这时，摩擦引起自由
子脱离导体，产生荷不平衡，从而产生流。
子Here, free electrons rub off the con ductor and create a charge imbalance that causes the current flow.
这时，摩擦引起自由子脱离导体，产生荷不平衡，从而产生流。
Frequency-resolved measurement of the emission from a Eaman free electron laser under superradiation condition by a microwave grating spectrometer are presented.
本文报道了利用微波栅摄谱仪测量
超辐射工作条件下的喇曼自由子激光器辐射谱的初步结果。
The gain characteristics of the collective free electron laser operating in a superradiant amplifier have been studied through the variation of the interaction length and pumping magnetic field.
工作超辐射模式下的集体区自由子激光器的增益特性研究可以通过改变互作用区长度及泵浦强度来
。
In the presence of impurities or in a nonstoichiometric solid, free electrons or electron holes are produced as a result of “charge compensation” to neutralize the effect of charged ionic defects 。
杂质存的情况下，或非化学计量比的固体中，为了中和带离子缺陷所引起的荷不平衡，便会产生自由子或子空穴。
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