掩体——掩体越重，挡在你和反射性沉降颗粒之间的物质——如厚墙壁，砖块，书本，土层越多，保护效果越好。
Shielding - the heavier and denser the materials - thick walls, concrete, bricks, books and earth - between you and the fallout particles, the better.
因此为了保护膜层，在过滤含有磨损性物质的料液时，必须对料液通过初过滤、离心分离 或沉降等方法进行预处理。
Therefore, filtering of abrasive matter required pre-treatment stages such as pre-filtration, centrifuging, or sedimentation in order to protect the membrane.
本 发明提供结合有具有反应性的物质的微小粒子的沉降抑制方法。
The invention provides a settling prevention method of the small particles for combining the reactive substance.
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