... cycle cascade helium refrigerator 闭合循环级联式氦致冷器 closed-cycle cascade helium refrigerator 闭合循环级联氦冷冻器 closed cycle helium turbine 闭式循环氦气透平 ...
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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
closed cycle cascade helium refrigerator 闭合循环级联式氦致冷器
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