共同旋转圈的作用，像个可以反射或透射这些波的介面，让它们转换星系整体的转动动能为自身的能量。
The corotation circle ACTS as an interface that can either reflect or transmit these waves allowing them to gain energy at the expense of the global rotational kinetic energy of the galaxy.
本文提出了分析土-基础-结构共同作用问题的一种新的模型，使土-基础介面条件得到了比较简洁而且统一的处理，在IBM个人计算机上开发了相应问题的分析程序。
This paper proposes a new model to analyse soil-foundation-structure interaction problems. The interface conditions between soil and foundation are consistently and concisely dealt with in the model.
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