坡段 meaning in English

grade section

The traffic noise of a new traffic source - combined overhead road was measuered , and the noise distribution under varied road conditions and different surroundings was compared , anlyzed and discussed . the noise model of overhead road , which with special section such as slope was put forwarded , based on the basic overhead noise model by considering the effects of the special section on the total noise level and distribution
比较分析了不同路况下及周围环境下的噪声分布情况，在水平段高架复合道路噪声的竖直分布模型的基础上，考虑上下坡段对两侧建筑物噪声分布的影响，建立了特殊路况下高架复合道路噪声的竖直分布模型，预测值与实测值基本符合。