The results showed that homogeneous precipitation method is superior to direct precipitation method and adding surfactants is useful to improve powder reuniting.
结果表明：均匀沉淀法优于直接沉淀法；表面活性剂的加入有利于改善粉体团聚。
The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.
探讨了直接加热法、直接水蒸汽法、间接水蒸汽法、减压蒸馏、酒精沉淀等五种回收方法的优缺点。
Based on the direct coupling analysis method, spatial responses of bridge foundations during precipitation and the dynamic changes of groundwater table are simulated.
采用直接耦合分析方法，对近邻桥基进行降水施工时的动态降水过程进行三维仿真模拟。
Based on the direct coupling analysis method, spatial responses of bridge foundations during precipitation and the dynamic changes of groundwater table are simulated.
采用直接耦合分析方法，对近邻桥基进行降水施工时的动态降水过程进行三维仿真模拟。
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