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

1.介绍阳极保护浓硫酸冷却的设计,用泵前流程的原因,重讨论冷却水路的设计。

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

2.ZJ罗茨真空泵不能直排大气，运行时需配备相应前级泵。