Quick closing valves, water hammer or supply pressure fluctuations can cause intermittent discharge.

迅速关闭阀门，水锤或供应压力波动可能导致间歇性排放。

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Hinge? Designed to withstand the shock load of quick closing to insure longer life and continued shut-off.

铰链-能够承受迅速关闭而产生的冲击负载，确保使用寿命更长和连续关闭。

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Where possible, leave the wrench on the valve so a quick closing of the valve can be made in the event of an emergency.

在可能的地方，把扳手留在阀门上，以便在紧急情况下可以迅速的关闭阀门。

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Eoin Bradley sparked into life in the closing stages and his two quick-fire scores left the Oak Leafers just a point adrift.

BBC: Donegal 2-13 0-18 Derry

Closing down the ring with quick footwork, Khan kept up the pace and Kristjansen's face was reddening with the blows as he found it difficult to keep out of range.

BBC: Khan stops Kristjansen in seven

Red Bull had a quick car all year and Sebastian has certainly done a great job of closing the season off.

BBC: Lewis Hamilton targets competitive start to 2011