helium是什么意思？

helium

英[ˈhi:liəm] 美[ˈhiliəm]

• n. <化>氦；

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。

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；