家用冰箱的致冷剂，也经历循环过程。
The refrigerant in a household refrigerator also undergoes a cyclic process.
热泵将一液体致冷剂加予循环流动，该致冷剂在一封闭的环道内从其液体阶段至气体阶段交替地作循环运动。
Heat pumps circulate a fluid refrigerant that cycles alternatively from its liquid phase to its vapor phase in a closed loop.
针对汽化冷却循环不正常的两种观点逐一进行了分析，最后得出纵水管汽化冷却脉动是导致冷却循环不正常的原因，从而提出了相应措施。
Two opinions of evaporative cooling failure were analyzed, and pulsating of evaporative cooling was the main cause. At last, some preventive measures were put forward.
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