With respect to the equipment for use,manufacture or transportation of toxicant or dangerous medium,strict limits for the emission of volatile organic compounds from valves have been issued in advanced countries.
较全面地介绍了ISO提出的两个工业阀门的易挥发物逸散的测量、试验和评定方法标准(草案)的基本思路和主要特点,以供有关部门参考。
Four methods of lost gas calculation of coal sample have been introduced, the results of calculation with different methods are compared, and general trend was obtained by actual data.
煤样逸散气量的确定是准确求取含气量的关键，方法不同，求取的结果也不同。
Stationary instability and dispersivity of wave propagation in the media in one_dimensional problem were analyzed.
在基于Biot理论的饱和_非饱和多孔介质的动力_渗流模型中计及流固惯性耦合效应· 对单轴应变的一维情况讨论了饱和和非饱和多孔介质中波传播过程的驻值失稳和逸散性 ,分析了流固粘性耦合 ,流固惯性耦合 ,流固混合体的压缩性 ,孔隙水饱和度 ,及固体骨架在高应变速率下材料粘弹塑性本构行为等因素的影响· 该工作将对克服饱和与非饱和多孔介质在强动荷载下波传播过程的数值求解困难提供理论上的依据和启