| 单词 | 氢气 |
| 释义 | 〔hydrocracking〕A process by which the hydrocarbon molecules of petroleum are broken into simpler molecules, as of gasoline or kerosene, by the addition of hydrogen under high pressure and in the presence of a catalyst.氢化裂解：将石油的含氢分子分裂成更简单的分子（象汽油和煤油的分子）的过程，此分裂过程是在加催化剂及高压氢气的条件上进行的〔Charles〕French physicist and inventor who formulated Charles's law (1787) and was the first to use hydrogen in balloons (1783).查理，雅克·亚历山大·塞萨尔：(1746-1823) 法国物理学家和发明家，提出了查理定律(1787年），并首次在气球里使用氢气(1783年）〔chromosphere〕An incandescent, transparent layer of gas, primarily hydrogen, several thousand miles in depth, lying above and surrounding the photosphere of a star, such as the sun, but distinctly separate from the corona.太阳的色球层：白热的透明气体层，主要是氢气，有几千英里厚，在恒星（如太阳）的光球外围和四周，但同日冕可以清楚地分开 |
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