Strengthened corrosion monitoring and testing, timely maintenance and minimum temperature and pressure fluctuations proved to be the effective measures for extending the service life of linings.

加强腐蚀监、检测，及时进行维修和减少温度、压力的波动是延长衬里寿命的有效措施。

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For all elements other than flow elements or control valves, the true minimum, normal and maximum pressure and temperature ranges over which the element is expected to be effective are shown.

对于所有元件(流量元件或控制阀除外)，列出了元件预计起作用范围内的实际最小、正常和最大压力与温度？

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