PROII中不同物流的颜色可以设置不同的颜色吗? 那虚拟物流的作用是什么 pseudo-products are used to create streams corresponding to column internal streams, making them available for flowsheet calculations. define pseudo-products in the column pseudo-products window which you may reach by clicking pseudo-products on the column feeds and products window. the following types of pseudo-products are available:  net tray liquid or vapor flow  total tray liquid or vapor flow  pumparound liquid or vapor bypass flow  thermosiphon reboiler feeds and products thermosiphon reboiler streams are limited to the inside-out algorithm. 查看更多