As the same time, the difference of force transferation between stiff beam under elasticity brace and stiff brace is compared.

计算的同时比较了弹性支撑上的刚性主梁和刚性支撑上的刚性主梁在活载传递上的差别。

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For (sub -) stiff beam-soft half space systems, wave speeds in beam are not critical any longer, but there is still a minimum critical velocity.

对(次)硬梁-软半空间系统，梁的波速不再是临界速度，但也存在一个最小临界速度。

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For soft beam-stiff half space system, wave speeds in beams are also critical velocities.

对软梁-硬半空间系统，梁的剪切波速和压缩波速也是临界速度；

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