An identification procedure of nonlinear unit feedback system is investigated by means of operator notation and Fourier transform, and some formulas for identification are given.
用算子符方法及傅里叶变换研究了单位反馈线性系统的一种辨识方法，并给出了辨识算式。
This is why we use good design practices and automated feedback loops like unit or system tests; to keep things easy to change.
这就是为什么我们使用好的设计实践，和像单元测试与系统测试这样的自动化反馈环，都是为了让修改变得容易。
A closed loop system with information feedback consisted of production planning and process operation of unit was optimized and integrated as two ranks in petrochemical industry.
将石化企业的生产计划与装置的操作工艺作为两个等级进行优化集成，从而构成了一个带有信息反馈通道的闭环系统。
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