Domestic sewage motorless treatment facility, for low consumption of power and simple control, finds more and more application in railway sewage disposing.

无动力水处理设施由于其动力消耗低,管理简单,在铁路水处理域越来越泛,但其实际的处理效果好坏,一直是制约其推的主要原因。

Various substance has very small autoprotolysis constants which,however,has more large difference,so that the amphoteric solvents are found more wide application in titrimetric analysis.

不同的物质具有非常小的,然而又是差异较大的自递常数。因此,这种两性溶剂在滴定分析中找到了更为阔的域。