internal noise短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 固有噪声,内噪声 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。 cnki 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。 dictall