supercritical

基本解释

And then we have gas cooled reactors which can use supercritical carbon dioxide or helium.
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。
But a strong police presence in a supercritical hot spot doesn’t provide a lasting solution.
但是，在超临界的热点中，一个强力警方的出现并不能提供一个长久的解决办法。
Such “ultra-supercritical” boilers, they say, could achieve efficiencies of over 50%, reducing emissions still further.
他们说这种“超超临界的”熔炉可能让燃烧效率超过50%，并进一步减少污染物排放。

"Supercritical" means the boiler runs at a high temperature (1, 100 degrees Fahrenheit), increasing thermodynamic efficiency.
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relating to substances that are heated to higher than their critical temperature and pressure (= the highest temperature and pressure at which a gas can be changed into a liquid), resulting in changes to the way they behave

(of a fluid) brought to a temperature and pressure higher than its critical temperature and pressure, so that its physical and chemical properties change