hydrogen A flammable colourless gas that is the lightest and most abundant element in the universe. It occurs mainly in water and in most organic compounds and is used in the production of ammonia and other chemicals, in the hydrogenation of fats and oils, and in welding ['haɪdrəʤ(ə)n] n

environ.

氢 (易燃、无色的气体，且是最轻和宇宙中含量最丰富的元素，它主要存在于水和大部分的有机化合物中，且被使用于制造氨和其他化学物质、油和脂的氢化，和焊接中。)

hydrogen

: 1905 phrases in 78 subjects

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hydrogen
gen.	氢
agric.	氢
auto.	氢
avia.	氢
chem. од.	氢
compr.	氢气
earth.sc.	氢
environ.	氢; 氢 H
met.	氢


main sequence
avia.	主星序
IT	主序列