例文
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- Compressed hydrogen has an energy density of only 5.6 megajoules per liter.
- Compressed hydrogen costs 2.1 % of the energy content to power the compressor.
- Positive ion clusters are also formed when compressed hydrogen expands though a nozzle.
- The Ballard cell is simply refueled with compressed hydrogen when it runs low.
- Water vapor is the only emission from fuel cell vehicles powered with compressed hydrogen.