By researching systematically the working performances of the solenoid-controlled valve, some theories and experimental rules are summarized.
通过系统地研究电磁控制阀的工作性能，总结出各种理论和试验规律。
2
By varying the current to either solenoid, the amount of spool movement can be varied and hence the amount of flow through the valve can be controlled.
通过改变两个之一电磁铁的电流，阀芯移动的位移能够被改变，因此控制了通过阀的流量。
3
The proposed system consists of an electroosmotic pump and two solenoid valves, all of which are controlled by a PC computer automatically.