氦３氦４混合体helium 3-helium 4 mixture【低温】
氦纯化器helium purifier【化工】
氦氖激光疗法helium-neon laser therapy, He-Ne laser therapy
超连氦superfluid helium
氦气压缩机helium compressor
氦灯helium lamp【电】
氦氖激光器helium-neon laser
高压氦气闪烁计数器high pressure helium gas scintillation counter