temperature-velocity formula

When the hydrocarbon maturity history is rebuilt in present basin modeling, usually the single TTI ( time temperature index) R o ( vitrinite reflectance) formula is only used, which may cause the bigger error of R o history and obvious wrong concept.

目前盆地模拟中重建烃类成熟度史时，一般只制作单一TTI（时间温度指数）Ro（镜质组反射率）公式，不仅使成熟度史的误差较大，还有明显的概念错误。

The empirical interpolation formula of the equivalent permittivity with temperature for reaction mixture

反应混合物等效介电常数与温度关系的经验插值公式

The effects of the reaction temperature, reaction time, pH and reaction formula on the yield of the product were studied.

考查了各反应步骤中反应温度、反应时间、pH值和投料比等实验因素对产物收率的影响。

The design formula of long neck valve cover of low temperature valve is given.

给出了低温阀门长颈阀盖设计公式；

Penman formula was used to calculate the evapotranspiration in the upper valley of the Huanghe river since 1980.The variation tendency of some climatic factors, such as evapotranspiration, sunshine duration, air temperature, air saturation deficit and etc, were analysed.

利用彭曼公式计算80年代以来黄河上游流域蒸散量，分析了该地区蒸散量、日照时数、气温、空气饱和差等气候因子的变化趋势，并着重研究了诸因子对蒸散量的影响。