根据国内外文献资料，对近30年来流域产流理论、河道洪水波运动理论和流域汇流理论的新进展作了扼要介绍。
Advances in recent 30 years in the theories of watershed runoff generation, flood wave movement in rivers, and watershed flow concentration are briefly introduced.
洪水波在运动中不变形，则没有内摩阻损失，即所谓运动波。
If the flood wave was not deformed in motion, there was no internal friction loss, which is called kinematic wave.
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