Trade Capability – The amount of water delivered between regenerations. In addition it is dependent upon the amount of ion exchange resin during the softener and the excess salt employed for resin regeneration. ”，顿时感觉没了头绪，在网上找了很多解决办法都不行，最后终于解决了。 解决方法： 一、 主要是import的package不对，在第一个act An industrial water softener can decrease the quantit... https://holdenkduld.ja-blog.com/36280340/5-essential-elements-for-best-water-filter-for-drinking