...式), Linear Differential Equations(线性方程式), Exact Differential Equations(正 合方程式), Integrating Factors(积分因子) II.
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formal integrating factors 形式积分因子
An improvement was made in grouping to find the integrating factors, so that those for some differential equations will be worked out mainly by integration.
本文对用分组法求积分因子做了一些改进；从而使一类微分方程的积分因子，主要通过积分的运算就可以得到。
In the process of resources integrating, speed and quality are the sources of operation efficiency of the organization as well as the key factors that affects the validity of resources integrating.
在资源整合的过程中，速度和质量是企业经营效率的来源，也是保障系统资源整合有效性的关键。
Mine ventilation system optimization is a decision-making problem about complexity system which is composed of many integrating, interrelating and interdependent quantitative and qualitative factors.
矿井通风系统优化是一个有定性和定量相互结合、相互关联、相互制约的众多因素构成的复杂决策问题。
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