这些电流引线的高温超导段系传导冷却，上端用79K液氮冷却，下端由4.5K超临界氦流迫冷；

The HTS sections of these leads are conduction cooled, and the upper ends are cooled with 79K LN2 and the lower ends cooled by 4.5K supercritical He flow.

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得出最理想的方法是提高泵的转速，同时也证明了超临界氦循环泵采用高速全流泵和高速部分流泵设计的可行性。

It is proved that the best method is to enhance the rotor speed and the study shows that the pump can be designed as a full emission or a partial emission pump with a high speed.

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然后我们有气体冷却反应堆，那能使用超临界二氧化碳或者氦。

And then we have gas cooled reactors which can use supercritical carbon dioxide or helium.

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