Influence of the wake impact effect on the flow field and its average performance in a low speed axial-flow compressor was investigated by using external acoustic excitations.

通过采用外部声激励的方式，在低速轴流压气机内研究非定常尾流撞击效应对压气机流场结构以及时均气动性能的影响。

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Then, the diagonal components of Green function of single particle of the system which is the tight-binding model under influence of the external electric field are derived.

其次，我们运用单个粒子格林函数的形式来计算系统的位置对角元的格林函数，此系统是外加电场驱动下的紧束缚模型。

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The external electric field have significant influence on electron scattering rates between the high energy levels.

外加电场对低能级电子散射速率的影响较小，对高能级电子的散射速率影响相对较大。

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