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1·In addition, it USES multi-features weight adjusting method to improve the performance of the system, the result of retrieval will satisfy people's visual receptance.

另外，系统实现了基于多特征结合的方法进行检索，并利用基于相关反馈的权重调整方法进一步提高检索性能，使检索结果更加符合用户的视觉效果。

2·To predict the wheel's noise radiation, a FEM analysis model of the wheel is developed. Based on the modal superposition method, the radial receptance of the wheel is calculated.

为了预测车轮辐射的滚动噪声，本文建立了车轮有限元模型，对车轮进行了模态分析，并运用模态叠加方法计算了车轮的径向导纳。