helium

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

氦

[七国语言]英汉地理大词典

helium

氦

[七国语言]英汉电子大词典

helium

氦

[七国语言]英汉电子工程大词典

helium

氦

[七国语言]英汉化学大词典

helium

氦

[七国语言]英汉机械大词典

helium

氦

[七国语言]英汉矿业大词典

helium

氦

[七国语言]英汉农业大词典

helium

氦

[七国语言]英汉物理大词典

helium

氦

[七国语言]英汉冶金大词典

helium

氦

[七国语言]英汉原子能大词典

helium

氦

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

氦

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

氦

基本词义

helium

氦(He)

英汉进出口商品词汇大全

helium

氦

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

氦

英汉冶金大词典

helium

n.氦

英汉医学大词典

helium

n.氦