Thus instead of Boltzmann equation this model equation may be approximately used to discuss the motion of gases in the transient region between molecular flow and viscous flow Iimits.
因此可以近似地用此模型方程序代替玻氏方程序讨论介于分子流和粘性流之间的过渡区的气体运动情况。
The effects of PLMA′s relative molecular mass, content, temperature and flow state on the drag reduction effectiveness and the shear stability were discussed.
考察了其粘均相对分子质量、质量分数、温度及流态对减阻效率、抗剪切稳定性的影响；
Molecular sieve absorption system is adopted in the process flow to efficiently purify air and simplify fractionation system flow.
工艺流程中采用分子筛吸附系统，可有效净化原料空气，从而可以简化精馏系统的流程。
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