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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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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