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1·The classical elementary waves in Riemann solutions include rarefaction wave, shock wave and contact discontinuity.

黎曼解涉及的经典基本波包括疏散波、激波和接触间断。

2·This paper presents an experimental technique of diaphragm bursting by virtue of the rarefaction wave in double driver shock tube.

本文介绍了在双驱动激波管中运用稀疏波破膜的技术。

3·By combining the transient change model method and rarefaction wave method, the multidimensional rules to detect the leakage and locate the leak point were set up.

并结合管道瞬变模型法与负压波法建立多维判别法则，解决输油管道泄漏检测及漏点定位的问题。

4·The asymptotic stability of the rarefaction wave has been established for the impermeable wall problem under small perturbation conditions and non-isothermal conditions.

讨论了半空间中满足无渗透边界条件的一维黏性可压缩热传导流体的流动，给出了在小扰动和非等温条件下稀疏波的渐进稳定性。