流体的液动力和管路工作压力及液体密度引起的压力三者叠加而形成管内压力。
In the pipe, the pressure consists of three parts of fluid dynamic, pipe operation pressure and fluid density pressure.
软密封闸阀不应安装在使用压力可能超过其额定工作压力的管路上。
The soft-sealing gate valve should not be used on pipeline in which running pressure may be over the rated pressure.
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