这是一个等式，这是个恒压过程，这项等于零，这意味着。
This is just an equality. I have a constant pressure dH process. This term here is equal to zero.
通过试验分析与理论推导，探讨了典型物料在恒压过滤过程中的过滤特性。
The filtration characteristics of the four suspensions were discussed by test and theoretical analysis.
通过试验分析与理论推导，探讨了典型物料在恒压过滤过程中的过滤特性。
The filtration characteristics of the four suspensions were discussed by test and theoretical analysis.
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