当回流比、 溢流率和絮体沉降特性处于变化中时，可用“状态点”的概念对活性污泥— 沉淀系统进行设计工作和系统分析。
The state point analysis can be used in the design and operation analysis of the activated sludge system as the RAS ratio, overflow rate and settling characteristics of flocci are varying.
潜泳的时候，不要碰珊瑚礁或者搅动沉淀物，因为这样做可能会破坏珊瑚脆弱的生态系统。
When snorkeling, do not touch the coral or stir up sediment, as these actions can damage the reef's fragile ecosystem.
沉积物岩心主要记录的是沉淀在海底沉积物，一层又一层，记录它们沉淀时的海洋系统状况。
Sediment cores are essentially a record of sediments that settled at the sea floor, layer by layer, and they record the conditions of the ocean system during the time they settled.
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