求翻译：空气制冷循环是利用涡轮膨胀机内的空气的绝热膨胀实现制冷，与膨胀机同轴连接的离心压气机回收膨胀功，可以减少系统的耗功量，从而提高空气制冷系统的性能系数。此外，空气作为天然制冷剂，对环境无任何污染，是未来可选择的替代制冷剂。因此，开展对空气制冷循环的研究具有重要理论意义和实际应用价值。是什么意思？

Air refrigeration cycle is the use of air within the turbine expander adiabatic expansion of refrigeration, centrifugal compressor expander coaxial connector recycling expansion work can reduce system power consumption amount, thereby increasing the coefficient of performance of the air cooling syst

Air cooling loop is to use Turbo-expanders in the thermal expansion of the air for cooling, and expansion of the shaft is connected with the centrifugal air compressor recycle expansion, and can reduce system power consumption of the Falun Gong, and thereby increase the air cooling system performanc

The air refrigeration cycle is uses in the turbine wheel expansion machine the air adiabatic expansion realization refrigeration, with the expansion machine plumbing centrifugal compressor recycling expansion work, may reduce the system to consume the merit quantity, thus enhances the air refrigerat

Air refrigeration cycle is the use of thermal insulation of air turbine Expander expansion refrigeration, coaxial connectors and Expander of recovery and expansion of a centrifugal compressor, you can reduce the amount of power consumption of the system, so as to increase the coefficient of performa