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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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 order to cause the teaching process to be at the positive cycle condition, must through the information feedback, carry on own adjustment.

为使教学过程处于良性循环状态，必须通过信息反馈，进行自身调节。

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For there to be a cycle, some condition or situation must recur over a period of time.

FORBES: Expect Two Recessions Before End Of Decade

It is generally stipulated among political experts and interested observers of the 2012 election cycle that the presidential contest will be heavily weighted toward the condition of the economy, especially unemployment.

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Obesity increases the chances of developing sleep apnea, a condition that combines choking and waking in an exhausting, sometimes life-threatening cycle.

NEWYORKER: Up All Night