If upstreampressure can exceed D101 design pressure, it will add a block-in contingency to safety valve sizing.
如果上游压力会超过D101的设计压力则会给安全阀的调节带来出现意外堵塞的一种情况。
2
Installed in a mainline it prevents upstreampressure from dropping below a preset minimum. Solenoid override of the sustaining function allows for electrical on-off operation.
安装在主管线内，防止上游压力降到预置最小压力以下。电磁阀的过载平衡功能使其能够进行电气开-关操作。
3
It was theorized with a high degree of probability that the change in period was due to the nonlinearity of the hydrodynamic pressure acting on the upstream face of the dam.