steady rotation

This paper gives the hydrostatic pressure expression for ideal fluid and the Bernoulli's equation for steady flow state in uniformly rotation frame reference. And two applied examples are given.

给出了相对转动参照系静止的理想流体内部的压强及稳定流动时的伯努利方程，并应用导出的压强公式和伯努利方程求解了两个问题。

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Up to today, the scientific system of rotation is still a effective measure to make the use and the recuperation of farmland coordinately, to maintain the ecological balance of farmland, to bring a continue and steady increase in agriculture.

今天，建立科学轮作换茬制度仍是一项促进用地和养地协调、保持农田生态平衡、促进农业持续稳定增产的有效措施。

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