这样使用节流管汇是不正确的。
设计了专用的控制电路板,完成了对节流管汇的控制。
Special circuit board has been designed to finish the control of throttles.
设计了一套专门用于控制多级节流管汇液动平板阀的控制系统,主要目的是为多级节流系统在压井过程中实现自动控制奠定基础。
A control system which USES to control the flat valve of multistage throttle is design in order to establish the foundation for automatic control of multistage throttle during press the well.
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