有效频带 meaning in English

band, effective
effective band

Artificial neural network ( ann ) method is proposed to use in active control system after the analysis of the effective frequency bandwidth of tmd control system
在分析了被动tmd用于风振控制存在有效频带窄的问题后，提出了采用神经网络提供主动控制力的主动控制方法。
The inversion ' s resolution is restricted by seismic sampling rate , dominant frequency and bandwidth used a practical model to prove , and two difference concepts are put forward between seismic resolution and stratigraphic resolution
用实际模型论证反演的分辨率与地震资料分辨率的关系，认为反演的分辨率受地震资料的采样率、主频和有效频带的限制，并提出地震分辨和地层分辨两个不同的概念。
The harmonic factor raises with the growth of volume percentage of hardening particles no mater what detecting direction is . but it is not a linear variation course . the harmonic factor mounts up slowly under the critical value but increases rapidly while exceeds the critical value
在正、逆向检测时，随着强化粒子体积百分数的增加，在有效频带范围内谐波系数同时单调增加，但其变化是非线性的，即在临界值以下，谐波系数的变化趋于平缓，而超过临界值以后，随着强化相粒子体积百分数的增加，谐波系数快速增加。