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helium是什么意思?
helium
英
[ˈhiːliəm]
美
[ˈhiːliəm]
n.
<化>氦
;
相关单词
antihelium
celothelium
endothelium
epithelium
heliumshield
Membrane epithelium
meningothelium
mesepithelium
mesothelium
例句
helium
balloons for the children’s party
儿童聚会用的氦气球
Gaseous
helium
is inert, colorless, odorless, non corrosive, and nonflammable.
气态氦极不活泼, 无色, 无嗅, 无腐蚀性, 不可燃.
Transfer lines for liquid
helium
should be well insulated and vacuum jacketed.
用于液氦的转移管应该隔热良好和带有真空夹层.
Objective To discuss the therapeutic value of low energy
helium
neon laser in hyperviscosity syndrome.
目的探讨低能量氦氖激光对高黏滞综合征的治疗价值.
Unlike
helium
- 4, it cannot be produced by radioactive decay.
与氦 - 4不同之处是, 氦-3不能由放射性衰变产生.
Helium
is a gas used in balloons.
氦是一种用于气球的气体.
A synthetic element produced in trace quantities by
helium
isotope bombardment of curium.
锎一种合成元素,由氦同位素轰击锔可得到微量的这种元素.
He plans to circumnavigate the world in a
helium
balloon.
他计画搭乘氦气球环绕世界一周.
The nonrigid
helium
- filled Blimp was principally developed by Alberto Santos - Dumont ( 1873 - 1932 ) .
软式充填氦气的飞船主要是由桑托斯- 杜蒙特 发展改进.
Helium
is a very light gas.
氦是一种非常轻的气体。
查看更多关于 “
helium
” 的例句
柯林斯高阶英汉双解学习词典释义
N-UNCOUNT
氦
Helium
is a very light gas that is colourless and has no smell.
英汉词典释义
n.
<化>氦
helium
balloons for the children’s party
儿童聚会用的氦气球
英英词典释义
Noun
1. a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
行业词典
医学:
氦:一种无色、无臭及无味的惰性气体,不自燃也不助燃。最初自太阳中测出,后从天然气体中获得。化学符号He,原子序2,原子量4.003。医学上〔USP〕用作气体的稀释物,例如在治疗某些呼吸障碍时用以稀释氧。也用作全身麻醉药的稀释剂;
机械:
氦氖激光器,helium-neon laser, He-Ne laser 以氖为工作物质、氦为辅助气体的激光器;
物理学:
氦镉激光器,helium-cadmium laser;
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