稳定的压力是滴灌系统安全运行和实现较高灌溉质量的前提，因此滴灌系统安装压力调节装置是非常必要的。
The pressure stable is the premise that it is have high irrigation quality and assuring the drip irrigation system safety, so the Pressure-regulated is necessary.
高层建筑消防给水系统安全阀的定压值通常根据系统工作压力按经验法计算，但这种方法仅适用于安全阀设置在消防水泵出口压水管上的情形。
The calculation of constant pressure values for relief valves in the fire suppression systems of high-rise buildings usually is based on the working pressure of pipe systems by experience.
研究含缺陷弯头的塑性承载能力在整个压力管道系统安全评定中占有重要地位。
So it is very important to know the effect of cracks on the collapse loads of elbows for integrity assessment of the piping system.
研究含缺陷弯头的塑性承载能力在整个压力管道系统安全评定中占有重要地位。
So it is very important to know the effect of cracks on the collapse loads of elbows for integrity assessment of the piping system.
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