prepump

The design parameters of anodic protection coolers and the reason why to choose a prepump process are presented.

介绍阳极保护浓硫酸冷却设计参数,选用流程,重点讨论冷却水路设计方案。

ZJ type Roots vacuum pump can't discharge gases directly into the air,it should be equipped with a cowesponding prepump at operation.

ZJ型罗茨空不能直排大气，运行时需配备相应。