闭式循环，又称中间介质法循环，是指工质在一封闭回路中的循环。闭式循环适用蒸汽式汽轮发电机，更适用蒸汽式其它装置和蒸汽式动力装置。这种循环方式的特点是使用某种低沸点物质做工质，例如氨或氨与丙烷的混合物、氟里昂等，从而节约了凝冷器冷却时丢失的大部分蒸发热。
...正中胸骨切口非体外循环下冠状动脉旁路移植术、小切 口心脏冠状动脉搭桥术、腔镜辅助或全腔镜下冠状动脉搭桥术、机器人辅助下冠 状动脉搭桥术、闭式循环（Port-Access）下冠状动脉搭桥术、Hybird技术以及 微创桥材料制备等。
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闭式循环空气透平 closed-circuit air turbine
半闭式循环 semi-closed cycle ; partially closed cycle
密闭式循环冷却水系统 closed recirculation cooling water system
闭式循环柴油机AIP CCDAIP
闭式循环燃气轮机 closed-cycle turbine ; closed circuit turbine ; closed-cycle gas turbine
闭式循环致冷 closed-cycle refrigeration
闭式循环冷却 closed circuit cooling ; closed-cycle cooling
闭式循环涡轮机 closed cycle turbine ; closed-cycle ; turbine
密闭式循环水肺系统 Semi-Closed
However,the closed-cycle solar cooling system presented obvious wave character owing to a lower water capacity.
然而,由于系统水容量较低,闭式循环太阳能空调系统在运行过程中呈现出明显的波动性。
参考来源 - 闭式循环太阳能空调系统热稳定性分析However,the closed-cycle solar cooling system presented obvious wave character owing to a lower water capacity.
然而,由于系统水容量较低,闭式循环太阳能空调系统在运行过程中呈现出明显的波动性。
参考来源 - 闭式循环太阳能空调系统热稳定性分析·2,447,543篇论文数据，部分数据来源于NoteExpress
在闭式循环柴油机配氧反馈控制的基础上采用了神经网络前馈控制策略。
Based on the feedback control, the neural feedforward compensation was applied in oxygen control of closed cycle diesel.
分析了空分设备闭式循环氮水预冷系统杂质浓缩的原因，提出了处理措施。
Analysis focuses on the reason for impurity concentration in closed-cycle nitrogen-water precooling system of air separation unit. The solution to this problem is also presented.
通过对华能汕头发电厂2号机组闭式循环冷却器改造前后的性能测试结果进行了对比。
The performance before and after retrofitting of the closed loop cooler of Huaneng Shantou Power Plant's No. 2 set are being compared by performance test data.
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