简明英汉词典

helium
[5hi:ljEm, -liEm]
n.
氦(化学元素, 符号为He)

美国传统词典[双解]

helium
he.li.um
AHD:[h?“l?-…m]
D.J.[6hi8li8*m]
K.K.[6hili*m]
n.Symbol He (名词)符号 He
A colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. It is used as a component of artificial atmospheres and laser media, as a refrigerant, as a lifting gas for balloons, and as a superfluid in cryogenic research. Atomic number 2; atomic weight 4.0026; boiling point -268.9=C; density at 0=C 0.1785 gram per liter.See table at element
氦:自然界天然气体或放射性矿石中一种无色、无味的惰性气体状成分。用作人造大气层和镭射媒体的组成部分,和用作制冷剂及飞行气球的气体,还在低温学研究中用作超流体。原子序数2;原子量4.0026;沸点-268.9=C;浓度在0=C时为每升0.1785克参见 element

语源
From Greek h?s [sun (so called because its existence was deduced from the solar spectrum)] * see s3wel-
源自 希腊语 h?s [太阳(该元素的存在首先是在太阳光谱中测得,故名)] *参见 s3wel-

现代英汉词典

helium
[5hi:lIEm]
n.
〈化〉氦(元素符号为: He)

现代英汉综合大辞典

helium
[5hi:ljEm, -liEm]
n.
【化】氦(2号元素, 符号 He)

继承用法

helium-atmos-phere
n.
氦气氛

词性变化

helium
[5hi:ljEm, -liEm]
adj.
氦(气)保护的

特殊用法

liquid helium
液态氦

ortho-helium
正氦

radiogenic helium
放射成因氦

solid helium
(低温)固体氦

[七国语言]英汉地质大词典

helium

[七国语言]英汉地理大词典

helium

[七国语言]英汉电子大词典

helium

[七国语言]英汉电子工程大词典

helium

[七国语言]英汉化学大词典

helium

[七国语言]英汉机械大词典

helium

[七国语言]英汉矿业大词典

helium

[七国语言]英汉农业大词典

helium

[七国语言]英汉物理大词典

helium

[七国语言]英汉冶金大词典

helium

[七国语言]英汉原子能大词典

helium

美国传统词典

helium
he.li.um
AHD:[h?“l?-…m]
D.J.[6hi8li8*m]
K.K.[6hili*m]
n.Symbol He
A colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. It is used as a component of artificial atmospheres and laser media, as a refrigerant, as a lifting gas for balloons, and as a superfluid in cryogenic research. Atomic number 2; atomic weight 4.0026; boiling point -268.9=C; density at 0=C 0.1785 gram per liter.See table at element

语源
From Greek h?s [sun (so called because its existence was deduced from the solar spectrum)] * see s3wel-

英汉船舶大词典

helium
n.氦

朗文英汉综合电脑词典

helium

英汉地质大词典

helium
n.氦,盐沼泽群落,沼泽群落

英汉环境大词典

helium
n.氦

英汉航空大词典

helium
n.氦

英汉化学大词典

helium
n.氦

英汉海运大词典

helium

基本词义

helium
氦(He)

英汉进出口商品词汇大全

helium

英汉计算机大词典

helium
n.氦

英汉机械大词典

helium
n.氦,氦He

英汉建筑大词典

helium
n.氦

英汉农牧林大词典

helium
n.氦

英汉消防大词典

helium

英汉冶金大词典

helium
n.氦

英汉医学大词典

helium
n.氦

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