When the controlsystem opens the well for production, the plunger and a column of fluid are carried up the tubing string.
当控制系统开井生产时，柱塞和液柱沿油管柱向上被携带。
2
This article mainly discusses the constitution of controlsystem For SGZ Series of Three-Column Auto Bottom Discharge Centrifuge consisted of PLC and FVR converter 3!
本文主要论述PLC和FVR变频器组成sgz系列三足式下部卸料全自动离心机控制系统的构成和工作过程。
3
This paper describes the stage of automation products in double-column vertical lathe electrical automatic controlsystem in a perfect integration of applications.