mass-variation 变质量
mass concentration variation 质量浓度变化
variation of relative mass 相对质量变化
variation of biomass mass concentration 微生物质量浓度变化
Results indicate that a significant degree of control over the ride characteristics can be achieved in a wide range of load mass variation.
结果表明：在负载质量变化较大的范围内，能相当大程度地控制悬挂系统行驶特性。
The EQCM studies provide quantitative results of surface mass variation and have thrown new light in the elucidating isopropanol oxidation.
EQCM研究还从电极表面质量定量变化的角度提供了异丙醇吸附和电氧化反应机理的新数据。
The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.
将传质方程引入到垂直管降膜蒸发传热模型中，求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。
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