Different methods are described to measure sludge sedimentation and filtration properties, by use of sedimentation indices, initial sedimentation velocity and capillary suction time.
利用沉积作用，最初的沉积作用速度和吸附时间，描述测量烂泥沉积作用和过滤产物的不同方法。
Companies, especially multinationals, based in these cities are spending tens of thousands of dollars to install air filtration systems and real-time pollution monitoring devices in their offices.
各个将总部设置在这些城市的公司(尤其是跨国公司)都花费上万美金，在办公室内安装空气过滤系统和实时污染监测设备。
The filtration method with 100 mesh sieve was used to measure the absorption time dependence of water-absorbency, then the LAS was derived.
使用100目金属筛网以自然过滤法测定高吸水树脂吸液倍率随吸液时间的变化，求出树脂吸液速率。
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