静止液体作用在与其接触的某个平面或曲面上的总压力。
讨论了海底沙脊和沙波发育演变问题。
The development and evolution of sea bottom sand ridges and sand ripples are discussed.
沙波的形成是典型的简单巨系统自组织现象。
The formation of sand wave is a typical self organization phenomenon of simple giant systems.
沙波具有一定的活动性，主要由SE向NW方向移动，且活动性逐渐减弱。
The sand waves move to some extent, with the main direction from SE to NW, yet this trend is gradually becoming weak.
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