单裂隙水流立方定律是岩体水力学中最基本的。
Cubic law of flow in single fracture is a basic and important law in the rock mass hydraulics.
第三定律是，椭圆轨道的周期，和距太阳的平均，距离的，立方成比例。
And then his third law was that if you take the orbital period of an ellipse, that is proportional to the third power of the mean distance to the Sun.
第三定律（周期定律）：各个行星绕太阳公转周期的平方和它们的椭圆轨道的半长轴的立方成正比。
The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.
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