vapour density

1. The variation of partial pressure of water vapour has been measured as a function of hydrogen filling pressure, plasma current, electron density, and temperature.
   研究了水分压强的某些特性及其同充氢气压、等离子体电流（电子温度）、电子密度的关系。
2. Making use of the software Excel deduces regression equations of saturated vapour, fitting the relationships of density pressure and density temperature. Presents a new method of regressive interpolation, which is simple and easy to use.
   利用Excel软件得出饱和水蒸气密度和压力及密度和温度的回归方程，并提出一种回归分析的新方法。
3. The model includes solid velocity, space grade of saturation with vapour density and space grade of porous pressure in concrete multiphase system.
   考虑了混凝土多相系统中固体速度、饱和度乘蒸汽密度的空间梯度和孔隙压力空间梯度；

noun

1. the density of a gas relative to the density of hydrogen

   Synonym:    vapor density