燃料电池能使用各种来源的氢气，包括一种简单的压缩气储罐。
Fuel cells can use various sources of hydrogen, including a simple tank of compressed gas.
并研究了不同稀土金属，不同焙烧温度，不同反应温度，不同空速条件及不同来源氢气等因素对催化性能的影响。
Many factors which may affect the catalytic behavior such as rare earth metal species, calcination temperature, reaction temperature, space speed and feed gas purity were studied.
氢气动力汽车不排放任何二氧化碳，但是制造氢气需要能量，且如果能量来源于火力发电厂，那么问题还是不能得到解决。
Hydrogen-powered cars emit no carbon dioxide, but producing hydrogen requires energy, and if that energy comes from coal-fired power plants, then the problem has not been solved.
氢气动力汽车不排放任何二氧化碳，但是制造氢气需要能量，且如果能量来源于火力发电厂，那么问题还是不能得到解决。
Hydrogen-powered cars emit no carbon dioxide, but producing hydrogen requires energy, and if that energy comes from coal-fired power plants, then the problem has not been solved.
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