在此基础上简化模型，推导出了高差混油浓度分布的基本方程。
So the model was simplified without consideration of the viscosity variation, and an equation for contamination concentration distribution caused by elevation difference was developed.
运用线性偏微分方程的可迭加性质所求得的碳浓度分布函数能够描述多段法渗碳过程的物理本质。
The carbon concentration distribution function derived from partial linear differential equation by applying the feasibility of repeat adding can describe the innate character of multi stage ca...
利用含有受激布里渊散射效应(SBS)的传输方程，研究了透明传输和最佳掺杂浓度下，受激布里渊散射效应对分布式掺铒光纤放大器(d - EDFA)的各种特性的影响。
In this paper, we report the study of the effect of SBS on various properties of the distributing erbium doped fiber amplifier (d EDFA) using a convective equation.
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