The open angle of the flow control valve is adjusted by electric actuator, which can be controlled remotely to meet the requirement of system measure.
流量控制阀由电动执行器调节开度，可实现远距离控制阀门的开度，以满足系统计量的要求。
A very basic requirement for a computer controlled process is a flow chart or logic.
对电脑控制过程的最基本的要求是流程图和逻辑控制。
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