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等熵变化 [děng shāng biàn huà]
isentropic change
- 等熵的没有熵的变化的；
Without change in entropy; at constant entropy. - 而以波阻抗作为设计参数，所得飞片的击靶波形随时间的变化更加平缓，有望获得更好的准等熵压缩性能。
The design results show that the wave impedance distribution of flier-plate can be controlled more accurately by using wave impedance as design parameter directly. - 结合具体试验进行数值模拟。结果表明，信息熵能够较好的描述混凝土裂缝的起裂、稳定扩展等阶段的变化。
The concrete crack propagation process can be better described by the entropy variation, which was confirmed by experiment and numerical simulation.
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