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Hydrogen could be derived from coal-fired electricity, which is the cheapest source of energy in most parts of the country.
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燃煤发电是全美多数地区最廉价的能源，也可做为制造氢气的电力来源。 |
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Hydrogen embrittlement of 2205 duplex stainless steel has been evaluated using electrochemical permeation measurement, hydrogen microprint technique and slow strain rate tensile test in this study.
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摘要本实验主要利用电化学氢渗透量测、氢原子微印技术及慢速率拉伸试验，针对2205双相不銹钢的氢脆性与氢原子扩散方式的关系进行探讨。 |
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Hydrogen fires are difficult to extinguish.
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氢气着火难于扑灭。 |
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Hydrogen is also useful in the food industry for a process know as hydrogenation.
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氢在食品工业中对于所谓的氢化过程也很有用。 |
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Hydrogen is highly explosive.
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氢极易爆炸。 |
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Hydrogen peroxide(H2O2), Salicylic acid(SA), jasmonic acid(JA), ethylene(ET) and brassinolide(BL) play important roles in this network.
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过氧化氢，水杨酸，茉莉酸，乙烯，油菜素内酯等信号分子在这个网络中起着重要作用。 |
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Hydrogen production and natural gas purification are the initial stepping-stones to full-scale carbon capture at power plants; worldwide about 5 percent as much carbon dioxide is produced in these two industries as in electric power generation.
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氢气制造与天然气纯化，是发电厂全面展开碳捕集的垫脚石，因为这两个产业所制造的二氧化碳量仅次于发电厂，约占全球总量的5%。 |
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Hydrogen provided more lift than helium.
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氢气的上升性能优于氦气。 |
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Hydrogen sulphide odour. Objectionable taste and odour due to the presence of hydrogen sulphide resulting from the reduction of sulphur or of sulphur dioxide.
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硫化氢味：由于葡萄酒中的硫或二氧化硫被还原成硫化氢，而产生的一种恶劣口感和令人讨厌的气味。 |
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Hydrogen, the lightest element, has a single proton whereas uranium, the heaviest naturally occurring one, has 92.
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氢是最轻的元素，原子核中只有一个质子，而铀这种自然形成的最重元素的原子核中有92个质子。 |
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Hydrophily Pollination in which water carries the pollen from anther to stigma.
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水媒：是以水为媒介将花粉传递到植物柱头的一种传粉方式。 |
