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Listen to native speakers pronounce “cryogenic” in real conversational contexts with synchronized timestamps and subtitles.
hydrogen fuel cell ship. Tractors, this is a hydrogen fuel cell tractor that's an electric ship. These are existing technologies for the most part. Of course they can be improved.And on the right is a cryogenic hydrogen aircraft, which is run on liquefied hydrogen. The space shuttle runs on, or ran on, liquefied hydrogen. And the Russians built the Tupolov in the1980s that ran on this. But it's more mass, more volumous. You need more volume to store the hydrogen. But it weighs less. Because of the lightness of hydrogen.