本文采用有限元法研究近场双圆形孔洞、圆环形衬砌对瞬态sh波的散射和动应力集中问题。
The scattering problems and the dynamic stress concentration problems of SH-wave by double circle cavities, and circle lining in near field are investigated in this thesis by the method of FEM.
用含有背散射和饱和效应的双模激光场的理论模型讨论了背散射和外加注入信号对环形激光场的统计性质的影响。
The influence of backscattering and injected signal on the statistical properties of ring lasers is discussed by a full saturation laser theory.
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