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。
In petrochemical production, such methods as air compressing, pump circulation, mechanical blending and pipeline mixing are usually used in product mixing.
在原油输送工程中，常用离心泵作为原油输送泵组。
Centrifugal pumps are used usually as pump unit in crude oil transportation engineering.
并比较便携式注射泵与常用注射泵的一些特性。
Some properties of portable syringe driver were compared with those of clinically common used syringe driver.
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