1. combine or treat with or expose to hydrogen, esp. to add hydrogen to the molecule of (an unsaturated organic compound). 
   和氢混合用氢处理或暴露在氢下向未饱和的液体中加入氢气。
2. hydrogen as energy source 
   氢能源
3. The gas tank could be idled with this metallic hydride and the hydrogen driven off by heat as needed. 
   煤气箱可以贮装金属氢化物，需要时可加热使氢气放出。
4. hydrogen oxygen fuel cell 
   氢氧燃料电池
5. 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

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• 1. hydrogen
  Nitrogen ['naitr?d??n] 【氮】...hydrogen ['haidr?ud??n] 【氢】...Urea ['ju?ri?]【尿素】
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• 2. h hydrogen
  H Hour 小时...h hydrogen 氢...H Magnetic Field Intensity 磁场强度
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• 3. (h) hydrogen
  高压水清砂机 hydro-blast...氢(h) hydrogen...铜氢脆性(铸疵) hydrogen brittleness of copper
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• 4. hybrogen
  hybroaeroplane 水上飞机...hybrogen 氢...hydrant 给水栓
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