vacuum tube receiver
... 真空管路：vacuum tube 真空管接收器：vacuum tube receiver 真空管继电器：vacuum tube relay ...
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而太阳能集热器用真空管作为接收器，可以大大减小接收器外表面的散热损失，可以显著提高集热器的集热效率。
The receiver with a vacuum tube can greatly reduce the heat loss caused by surface convection, and hence the heat transfer efficiency can be improved effectively.
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