Three kinds of new viscoelastic damping materials are applied in railway vehicles to reduce internal noise.

三种新型粘弹性阻尼材料应用于铁路车辆降低车内噪声.

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Reducing vehicle internal noise and improving passenger car environment have become the very urgent matter.

降低车内噪声,改善客车车内环境已成为当务之急.

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The internal noise level becomes the important index of weighing the grade level of the automobile.

车内噪声水平成为衡量汽车档次高低的重要指标.

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