与中央空调冷冻水泵变频相比，冷却水泵变频问题研究较少，争议也比较多。
There were rather less studies on the frequency conversion of cooling water pumps in central air conditioning systems than that of cold water pumps.
每艘潜艇都配备了8台水泵，他们将能以每分钟500吨的速度向水面输送冷冻水。
Each submarine would be fitted with eight pumps capable of quickly dumping more than 500 tons of chilled water per minute into the water above.
每艘潜艇都配备了8台水泵，他们将能以每分钟500吨的速度向水面输送冷冻水。
Each submarine would be fitted with eight pumps capable of quickly dumping more than 500 tons of chilled water per minute into the water above.
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