... 电子管放大器 electron tube amplifier 电子管工况 valve working condition 电子管工艺学 tube technology ...
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Exchange the sealing ring of the valve body according to the working condition of rubber sealing ring in order to ensure the sealing performance.
按橡胶密封圈使用性能，根据具体情况定期对阀体的密封圈进行更换，以保证阀门的密封性能。
Introduces the working principle and the method of the selection about the type ZY47 Valve controlled by the pressure difference, and analyses its adaption condition.
介绍了ZY 47型自力式压差控制阀的工作原理和选型方法，分析了不同被控环路系统的适用条件。
Check the working condition regularly. Replace the sealing ring after the valve is used for a long time.
定期检查运行情况，对长期使用后的伸缩器应及时更换密封圈。
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