In open cycle condition, the frequency of the cleanness should base on cooling water quality.

在开式循环的情况下，清洁的间隔时间长短要根据冷却水的性质而定。

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In the event of a stall, immediately open the roll gap and turn off the cooling water.

在轧机发生事故时，应快速打开轧辊间隔，关掉冷却水，去掉辊身上卷曲的带钢。

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Open re-circulating cooling water shall be on the tube side of the cooler.

敞式循环冷却水应在冷却器的管程内。

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That thinking changed on March 28, 1979, when a small valve stuck open, cooling water escaped and the reactor core of TMI's Unit 2 began to melt.

CNN: Three Mile Island, 20 years later