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。
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。
A nonlinear parametric excitation equation is obtained for ships in longitudinal waves, and the dynamic stability is analyzed when the natural frequency of heave and roll are approximately equal.
本文建立了在纵浪上航行船舶的非线性参数激励横摇运动方程,研究了当升沉固有频率接近横摇固有频率时船舶的稳定性。
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