大规模的水土保持措施实施以后，细泥沙入海通量的减少幅度要大于粗泥沙。

After the measures were taken of soil and water conservation, the decrease of the sediment flux into the sea in fine grain-size fractions was more than that in coarse fractions.

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通过格栅以一定振幅不同频率的往复运动，在水体中造成均匀的紊动场，来研究紊动对细泥沙浆液絮凝结构的影响。

A uniform turbulence field with different intensities is generated in the body of water and is used to study the effect of turbulence on the rheo-logical behavior of the slurry.

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本文首先提出了一个细颗粒悬浮泥沙的动力学判据。

A dynamic criterion of suspended fine sand-mud is given in the paper.

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