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。
Here is the port side view of the aft ballast tank showing a closer view of the vent valve and tubing.
这里是港口方面鉴于对尾部压载水舱展示了更紧密的看法通风口的阀门和油管。
The port side is the vent valve and tubing, and the starboard side is the blow tube.
港口方面是发泄阀和油管，和右舷侧是打击管。
Open bleed port at high point in system and vent trapped air until a solid stream of liquid emerges.
打开系统较高点的泄放口，排出收集的空气，直至液体液柱流出现。
Open bleed port at high point in system and vent trapped air until a solid stream of liquid emerges.
打开系统较高点的泄放口，排出收集的空气，直至液体液柱流出现。
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