本文介绍了在航空发动机闭环控制系统的反馈通路上施加伪随机试验信号时，对发动机模型参数进行辨识的方法。
An aeroengine model can be identified from actual closed-loop engine test data if pseudorandom binary sequence as test signal ACTS on feedback circuit of the closed-loop control system.
而如果共同感染的病毒数目超过一个特定的阈值，则cl基因主导的正反馈环路将使细胞转向溶原通路。
If the number of co-infecting viruses exceeded a certain threshold, the positive feedback loop associated with cI dominated, turning the switch to the lysogenic pathway.
决定通路包括正副反馈环，根据宿主细胞内含有病毒基因组数目的改变而进行选择。
The decision circuit involved both negative and positive feedback loops, which responded differently to changes in the total number of viral genomes inside a cell.
视觉皮层是研究反馈投射通路的较好模型，其下行反馈的投射涉及注意、搜索和认知等高级功能。
Compared with the role of the feedforward projection, much less is known concerning the functional roles of the feedback projection.
同时，脑也通过离中通路对视网膜进行反馈调控，特别是在像家鸽这些地面觅食鸟类中，峡视核就是这条离中通路的起点。
Meanwhile, the brain also sends messages back to the retina via the centrifugal pathway, which originates from the isthmo-optic nucleus in ground-feeding birds such as pigeons.
同时，脑也通过离中通路对视网膜进行反馈调控，特别是在像家鸽这些地面觅食鸟类中，峡视核就是这条离中通路的起点。
Meanwhile, the brain also sends messages back to the retina via the centrifugal pathway, which originates from the isthmo-optic nucleus in ground-feeding birds such as pigeons.
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