Briefly introduce the standard, process and methods of flow test of valve, and analyze the affecting factors to results such as re.
介绍了阀门流量试验的方法和标准，分析了影响流量试验结果的各种因素如雷诺数等。
The changes that will happen in process-control plants due to the application of smart valve technology a re described with the focus on its use and maintenance.
智能调节阀技术会给过程控制企业带来改善，重点介绍了智能调节阀的使用和维护。
When the valve closed for some time, and if the MCU are still working, the system can achieve re-ignition .
当气阀关闭一段时间后，如果单片机仍在工作，系统可以实现重新点火。
Results The group had no case dead, 2 cases need re-mitral valve replacement.
结果全组无手术死亡病例，2例行二尖瓣置换术。
Results The group had no case dead, 2 cases need re-mitral valve replacement.
结果全组无手术死亡病例，2例行二尖瓣置换术。
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