roll-off frequency 衰减频率
high frequency roll-off 高频率衰减
roll natural frequency 横摇自然频率
frequency of roll 横摇频率
frequency in roll 横向振动频率
natural circular frequency of roll 横摇固有圆周频率
Roll of 200 meters can be installed on the tape, the tape greatly reduce the frequency of replacement.
可安装200米的大卷胶带，大大降低更换胶带的频率。
Next, according to the weapon system request, application frequency range analytic method, has designed the roll stabilization loop using the PD controller.
其次，根据总体要求，应用频域分析法，设计了PD控制滚转稳定回路；
Individual infinite variable speed drive of each roll with AC-motors coupled to programmable frequency inverters.
电机驱动方式为交流变频无极变速驱动。
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