You can also gauge how fast the bar is filling up, so can roughly estimate how long it's going to take for the whole thing to finish.

你也可以目测进度条的前进速度，大概估计出还需要多久才能全部搞定。

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The pressure gauge is protected by a glycerin filling against pressure peaks condensed water and the ingress of water during cleaning.

丙三醇填充物保护压力表在压力峰值、冷凝水和清洗过程中的水入侵时免受损害。

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Single - or multiple leakage test, by suppressing media filling quantity is small, if the tube bundle leakage, easy to from the pressure gauge on the fast show pressure drop.

单管或多管试漏时，因打压介质充填量小，若管束有漏点，易于从压力表上快速显现出压降。

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