【Key words】 dynamic stability； pile foundation； dynamic non-line； parameter resonance；
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Then the active controllers are designed in view of the parametric resonance.
之后针对输流管道的参数共振设计了主动控制器。
参考来源 - 两端支承管道在脉动内流作用下振动的主动控制When the ship-wave encounter frequency is near the twice of roll natural frequency, the principal parametric resonance occurs, and the large amplitude rolling arises.
当船-波遭遇频率接近横摇固有频率的2倍时,船舶发生主参数共振,横摇幅值增大;而当船-波遭遇频率较远地偏离横摇固有频率的2倍时,横摇运动幅值减小。
参考来源 - 纵浪中船舶参数激励非线性随机横摇研究·2,447,543篇论文数据，部分数据来源于NoteExpress
研究了其基本参数共振和主参数共振两种情况。
Two types of resonance are studied, fundamental and principal parametric resonance.
研究由桥面振动引起的斜拉索参数共振和亚谐波共振问题。
The parametric and subharmonic resonances of stay cables excited by the vibration of deck are investigated.
研究由弯斜拉桥桥面振动引起的斜拉索参数共振和主共振问题。
The parametric and primary resonances of stay cables excited by the vibration of deck of curved cable-stayed bridge are investigated.
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