Helium(He)

是什么意思
  • 网络
  • 英英释义

    Helium(He)

    • n.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)

      同义词:Heatomic number 2

    学习怎么用

    双语例句

    1.
    "Intwoyearswewilldoanotherexperimentwiththesameequipment,butthis timewithmuonichelium,"headded.
    “未来的两年我们会用相同的设备去做另一个(测量质子大小的)实验,但这次是用μ氢,”他补充道。
    2.
    Forexample,Helium(He)(Greek:"helios"="thesun") was found when light from the sun was studied duringaneclipsein1868.
    比如说,氦(He)(希腊语:‘helios’=“太阳”)从一次1868年日食时候的太阳光中发现。

    权威例句

    LD50 = Lethal Dose Causing Death in 50 % of the Subjects N2 = Nitrogen N2O = Nitrous Oxide
    Electron impact ionization and multiphoton ionization of doped superfluid helium droplets: A comparison
    Conceptual Designs for a Spallation Neutron Target Constructed of a Helium-Cooled, Packed Bed of Tungsten Particles
    Oscillating ionization probability of hydrogen and helium atoms in a single XUV attosecond and delayed few-cycle infrared laser pulses
    Many-body calculation of helium ¹D–³D term intervals for 1snd (n = 12 ∼ 20) high Rydberg states
    In-situ administration of dendritic cells following argon-helium cryosurgery enhances specific antiglioma immunity in mice
    Effect of Helium-Neon Laser on Fast Excitatory Postsynaptic Potential (f-EPSP)of Neurous in the Isolated Rat Superior Cervical Ganglia
    Many-body calculation of helium D-1-D-3 term intervals for 1snd (n=12 similar to 20) high Rydberg states
    Temporally and spatially controllable gene expression and knockout in mouse urothelium. Am J Physiol Renal Physiol 299(2):F387-F395
    Linear Variation Method for Calculating Energy Levels of the Helium Atom
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