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1·It is the implication of the surface cultural discontinuity.

这就是浅层文化中断的含义。

2·Several properties of the weak discontinuity across an elastic-plastic boundary in plane wave propagation have been investigated by using the theory of singular surface.

本文用奇异面理论研究了弹塑性平面波传播中弹塑性边界间断的几个性质。