波形运动
In this paper. the Euler equation and equation of continuity of water movement are linearized on the basis of the small disturbance principle, then the undulatory equation is solved.
本文通过对水流运动的欧拉(Eulcr)方程和连续方程按小扰动原理进行线性化处理,然后求其波动方程的解。
Such is the undulatory nature of the movement of opposites in all things.
这是事物矛盾运动的曲折性.
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