你能够在单群理论或这多群理论里，单群理论假设，中子能量和所有的东西，要达到一个能量，我们必须要做出些调整。

And you can do it in one-group theory or multi-group theory. One-group theory assumes that the neutron energy and everything is going on at one energy and we have to make some adjustments.

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基于多镜理论提出了一种新的多腔滤波器群延迟计算方法，简化了计算过程，使得计算不再受实际材料的限制。

A novel method for calculating group delay of multi-cavities filters based on multi-mirror theory is presented, which simplifies the calculation and is not restricted by the practicable materials.

youdao

基于多镜理论提出了一种新的多腔滤波器群延迟计算方法，简化了计算过程，使得计算不再受实际材料的限制。

A novel method for calculating group delay of multi-cavities filters based on multi-mirror theory is presented, which simplifies the calculation and.

youdao