These quantities are not perfect differential.
这些量不是全微分。
It shows that the differential focussing method by comparing MTFs has perfect performances high speed, high precision focussing, not being affected by image displacement and flexibility etc.
实验表明，差分式对比传递函数法调焦，具有调焦精度高，调焦速度快，受像移影响不明显，适应性好等优点。
Numerical method of integral order ordinary differential equation, for example, Euler method, linear multiple step method, and so on, has had quite perfect theories.
对于整数阶常微分方程的数值解法，如欧拉法、线性多步法等都已有较完善的理论。
When the intensity of network externality is large enough, equilibrium results will be the same as the case of perfect competition, firms can not reap super profits by differential positioning.
当存在足够大的网络外部性强度时，均衡结果将与完全竞争市场的情形相同，厂商不能通过差异化定位获取超额利润。
Two-dimensional electrophoresis was used to analyze differential proteins between the perfect and imperfect flowers in Japanese apricot(Prunus mume Sieb. et Zucc).
应用双向电泳技术对果梅完全花与不完全花的蛋白质组分进行了比较分析。
The differential forward PID controller is one of the perfect PID controllers improved methods, which is fit to the condition of input frequent changes.
微分先行PID是理想型PID改进中的一种，它适合于给定值频繁变化的情况。
The differential forward PID controller is one of the perfect PID controllers improved methods, which is fit to the condition of input frequent changes.
微分先行PID是理想型PID改进中的一种，它适合于给定值频繁变化的情况。
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