What's the scope of cooling water supply for the open cycle system?

开式循环水系统冷却水的供应范围是什么?

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Even it perhaps needn't clean even if in open cycle condition.

甚至有可能在开式循环的情况下无须清洁.

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Drinking water before going to bed, can dilute the blood so that the open cycle.

睡前饮水, 可冲淡血液,使循环通畅.

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