The results of sediment volume and contact angle demonstrated the wettability in the paraffin liquid and hydrophobicity of the modified particles were improved;

沉降体积和接触角的测定结果说明改性粒子在液体石蜡中的润湿性和疏水性得到了提高；

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Thus a proportion of the total volume of any sediment, loose or cemented, consists of empty space.

因此，无论是疏松或胶结，沉积物总体积都有一部分是由空隙组成的。

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Wetland design can moderate peak flow rate and volume of runoff discharge and sediment deposition during precipitation events.

湿地项目可以缓和雨洪峰值流率及降水过程中的径流排放量和沉淀量。

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Sediment-carrying rivers have been diverted, sea level has risen (increasing the volume of water in the lagoon), a deep-water channel has been dredged for shipping, and turbid waters are killing the eel grass that stabilises mud flats.

ECONOMIST: Flood barriers