A mathematic model of the linear damped oscillation of swing with parameter exciting is presented. The theoretical analysis and numerical simulation for the motion behavior of swing is done.
建立了具有线性阻尼的秋千参激振动的数学模型，并对秋千的运动行为作了理论分析与数值模拟。
2
Results show that the quasi biennial (QB) oscillation is the most unstable mode of the linear coupled air sea system and only the QB mode displays ENSO-like horizontal structure.
结果表明：准两年振荡是线性海气耦合系统中的最不稳定模态，且只有该模态类似于ENSO水平结构。
3
Establishes the relationship between the oscillation of neutral difference equations with continuous variable and that of its associated linear limiting equations.