氦冷冻机 helium refrigerator 空气冷冻机 air refrigeration machine; cold air refrigerating machine ..
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closed-cycle cascade helium refrigerator 闭合循环级联氦冷冻器 ; 闭合循环级联式氦致冷器
cycle cascade helium refrigerator 闭合循环级联式氦致冷器
closed cycle cascade helium refrigerator 闭合循环级联式氦致冷器
helium vortex refrigerator 氦涡流制冷器
This SIS mixer receiver is reliable, and can achieve good noise performance even operated at 4.3k temperature with a close cycle helium refrigerator.
这种SIS混频接收机性能可靠，且可用闭合循环氦制冷机冷却，在4.3 K温度操作即可达到好的噪声性能。
The paper introduces the helium turbine which used in helium refrigerator of space environment simulator, including its design, setting-to-work test and its characteristics.
文章介绍了载人航天空间环境模拟器气氦制冷系统中氦气透平膨胀机的设计、制造、调试等过程，并说明了它具备的特点。
The dynamic simulation result also indicates that the trial-run scheme of helium refrigerator can be optimized and the debugging cost and time can be saved though dynamic simulation.
仿真结果还表明，氦制冷系统的动态仿真结果可以对优化氦制冷机试车方案、节省调试费用、节约调试时间、进一步提高氦制冷机制冷效率提供可靠的理论基础。
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