释放出来的气体中的氢气碰到火花，已经发生了爆炸，掀翻了建筑的屋顶，同时，又毁掉了本已经污染的整个系统。
There hydrogen in the released gas met a spark and exploded, blowing the roofs off the buildings but not, it seemed at the time, damaging the containment systems.
程中，有氢气和氧气以及酸雾逸出，不仅污染环境还具有危险性，维护时需要加水、加酸，已逐渐被市场淘汰。
Cheng, hydrogen and oxygen and acid mist escape, not only pollute the environment is also dangerous, and maintenance is needed to add water, acid, has been gradually eliminated by the market.
通过将片状氢氧化钠生产中由重油燃烧模式升温改造为100%氢气燃烧方式，大幅度降低了生产成本，减少了环境污染。
By transforming the combustion model of heavy oil into 100% hydrogen in producing the sheet sodium hydrate, the cost and environmental pollution are all reduced largely.
氢气可以取代乙炔、煤气、液化气等含碳气体，具有热值高、火焰集中、零污染，生产效率高，节能方便等优点。
Hydrogen can replace acetylene, gas, liquefied petroleum gases such as carbon, with high calorific value, flame concentration, zero pollution, high efficiency, energy saving and easy.
燃料电池汽车的零污染物排放使得它非常具有吸引力，但是要使用氢作燃料，就必须寻找一种清洁、可承受成本的方式来生产、运输及储存氢气，而这是个很大的挑战。
While fuel-cell vehicles are appealing because they emit no pollutants, it's been a challenge to find clean and affordable ways to produce, transport, and store hydrogen to fuel them.
通过电从水中提取氢气和氧气，氢气做为燃料，氧气助燃，燃烧的产物仅为水蒸气，不对加工的工件产生污染。
The product generate hydrogen and oxygen by electrolyzing water, hydrogen as fuel, oxygen as auxiliary combustion, the combustion products are just water vapor, and not pollute the workpieces.
然而宝马公司提到：虽然轿车本身不会污染环境，生产其燃料氢气所带来的污染是不可避免的。
The company cautioned, however, that while the cars don't pollute, production of hydrogen as a fuel does entail pollution.
间歇试验结果表明，对于微污染原水可以通过电解水供给氢气进行自养反硝化，并且通过对电流的控制可提高脱氮速度并可达到完全脱氮。
The batch operation demonstrated that the autotrophic denitrification with hydrogen produced from electrolysis of water can be used to treat the micro-polluted raw water.
取材于氢气的燃料电池燃烧时无污染，并已成为一项重要研究的攻克对象。
Fuel cells based on hydrogen burn cleanly, and are the subject of a serious research effort.
质谱的分析表明，碳纳米管上污染物降解的主要活性物质为氢气或H…
MS show that hydrogen or H·is the main active substance in the degradation of pollutants on the carbon nanotubes.
质谱的分析表明，碳纳米管上污染物降解的主要活性物质为氢气或H…
MS show that hydrogen or H·is the main active substance in the degradation of pollutants on the carbon nanotubes.
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