以研究主、副簧组成的悬架系统出发，建立了分段线性非线性悬架系统的动力学模型，运用KB方法求出了此类系统运动的解析解。

Kinetic model of piecewise-linear nonlinear suspension system is established, the analytic solutions of suspension system with dominant and assistant springs are derived by means of KB Method.

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实验证明具有防磨结构的复合材料副簧两端耐磨性能良好。

The excellent wear-resisting properties of composite auxiliary spring with wear-resisting structure were proved by experiments.

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该分层扫气系统由曲轴箱、主扫气道、副扫气道、分层管、笛簧阀和化油器等组成。

The scavenging system is composed of crankcase, main scavenging passage, sub passage stratifying pipe, reed valve and carburettor.

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