无法开启位置,可能你没有开启该档案的权限。
Could not open location; you might not have permission to open the file.
用于当阀门安装在高处或无法靠近的地方时,但是有需要经常观察阀门开启位置的情况。
Used when the valve is mounted in high or out-of-reach locations, but frequent monitoring of the valve position is required.
如果流体流速压力无法将阀门支撑在一个较大的开启度并保持在稳定的开启位置,则阀瓣和相关的运动部件可能会处于一种持续振动的状态。
The disc and associated moving parts may be in a constant state of movement if the velocity pressure is not sufficient to hold the valve in a wide open and stable position.
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