引用概率密度的概念，即转化率分布密度函数对连续离子交换过程进行分析。
The continuous ion exchange process was analysed through the concept of probability density and conversion distribution function.
采用可编程控制器(PLC)控制钠离子交换装置，可实现无人化管理的连续软化水生产。
With PLC controlled sodium ion exchange device, the unmanned continuous production of softened water can be realized.
当采用固定床连续甲酯化反应时，适宜的催化剂为强酸性阳离子交换树脂。
When the fixed bed continuous process is used, the appropriate catalyst is strong acid cation exchange resin.
离子交换的能力会随连续运行而降低，最后达到失效点。
The ability of a deionizer to exchange ions is reduced with continued operation, and a point is reached where it finally becomes exhausted.
结果表明：在连续入渗条件下，阳离子交换作用是控制地下水硬度升高的主要过程；
With the help of laboratory and thermodynamic simulation, the relation of nitrogen transformation with calcium and magnesium variation during wastewater infiltration in soil water system is studied.
结果表明：在连续入渗条件下，阳离子交换作用是控制地下水硬度升高的主要过程；
With the help of laboratory and thermodynamic simulation, the relation of nitrogen transformation with calcium and magnesium variation during wastewater infiltration in soil water system is studied.
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