?氦气换热器
... helium handling and storage system 氦气处理及贮存系统 helium heat exchanger 氦气换热器 helium ionization detector 氦电离检测器 ...
氦
氦气
The pre-cooler, also known as the heat exchanger, is made up of a huge number of tubes that use compressed helium to cool the air around it.
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