... 闭合循环气冷器 closed-cycle gas-cooled reactor 闭合循环冷却 closed cycle refrigeration 闭合循环冷冻器 closed-cycle refrigerator ...
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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。
This SIS mixer receiver is reliable, and can achieve good noise performance even operated at 4.3k temperature with a close cycle helium refrigerator.
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