Pre-heating oven. Oil heating for bronzing plate, constant temperature auto control, oil pumpcirculation.
烫金版油加热，恒温自动控制，油泵循环。
2
In petrochemical production, such methods as air compressing, pumpcirculation, mechanical blending and pipeline mixing are usually used in product mixing.
石油化工生产中常用的油品调合方法有压缩空气、泵循环、机械搅拌和管道调合。
3
The circulation shear bucket and shear pump were developed for treated the high stick slime cake.