Intercept the fluid medium upstream of the valve to be inspected with a shut-off valve and ensure that the subject valve is not under pressure (vent downstream, if necessary).
截取阀门上游的流体介质，用一个关闭阀门来进行检测，确保相关的阀门不处在压力下(如果必要的话，排除下游的流体介质)。
Series 7 should be installed downstream of the water meter and of the water pressure regulator.
系列7应该安装在水表和水压力调节器的下游。
And the ball must contain an adequate vent to the pressure port opposite of the downstream sealing port.
球体必须包含一个能够排出到下游密封端口的反面的压力端口处。
It is possible for the feed system to have a low impedance, looking downstream from the pressure source at a certain frequency.
在压力源下游，供应系统在某一频率下可能有一低的阻抗。
As the wind strikes the actuator disk on the upwind side, the pressure rises there, and the wind is deflected away from the disk, causing a large wake downstream of the disk.
当风力在逆风侧冲击促动盘时，那里的压力上升，并且风力从盘转向离开，引起盘下游的较大尾流。
Suction block and downstream piping is rated for discharge pressure, however the piping upstream including EBV is not rated for discharge pressure.
吸入口切断与下游管道按排放压力定型，但是上游管道(包括EBV)不是按排放压力定型的。
The permeation rate and separation factor decrease while increasing downstream pressure.
二次侧压增大，渗透通量和分离因子减小。
But some market experts reflect, downstream demand as the weather turns cold also gradually into the off-season, on the market pressure will gradually reflected.
但有市场人士反映，下游需求随着天气转冷也在逐步进入淡季，对市场的压力会逐步体现出来。
Due to the influence of radial positive pressure gradient, low-energy gas moves along trailing area to hub. That causes rapid dissipation and weakening of downstream passage vortex.
在叶栅下游，由于径向正压梯度的影响，低能气体沿尾流区向轮毂输运，引起下通道涡的迅速消散与衰减。
Pressure distribution curve confirms that there exists a region downstream of the cell, which produces high pressure, provides a positive lift force on the cell and retards continuous deformation.
压力分布曲线表明，在细胞的下游形成一个高压区，提供促使细胞受力达到平衡的升力，从而阻止了细胞的进一步变形。
The separation factor increases as the feed flow rate and downstream pressure increase, and decreases as the feed temperature increases.
同时流速提高，温度降低，以及增大冷侧压力，分离因子增大。
Like many of the Fairchild precision regulators, the compensating action of the inner valve assembly of the Model 100 allows complete stabilization of downstream pressure.
飞兆半导体一样精确的监管机构，对示范100内部阀总成的补救行动的许多允许下游压力完全稳定。
To control foundation seepage and exit gradient, a plastic concrete cut-off wall, a grout curtain, and a set of downstream pressure relief Wells are incorporated in the design.
为了控制基础渗流和出逸坡降，设计采用了塑性混凝土防渗墙、帷幕灌浆以及在下游增设一套减压井相结合的方案。
When the valve outlet pressure to a pilot valve spring set pressure, pilot valve opens, the control room to the downstream drainage.
当阀门出口压力降到导阀弹簧设定压力时，导阀开启，控制室向下游排水。
While medium pressure and the upstream end of the resilient and flexible structures to increase the downstream end of the valve seat seal.
同时介质压力与上游端挠性结构的回弹力又增加了下游端阀座的密封。
Even before the burst point where the particulates downstream increase, due to change in pressure or other external conditions, can still destroy the system.
即便在下游杂质增加到破坏临界点之前，由于压力的改变或其他外部环境的原因，还是会导致系统被损坏。
Even before the burst point where the particulates downstream increase, due to change in pressure or other external conditions, can still destroy the system.
即便在下游杂质增加到破坏临界点之前，由于压力的改变或其他外部环境的原因，还是会导致系统被损坏。
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