Noise attenuation section should be in place where is wide, relatively light discrepancy in elevation, and where the earth's surface vegetation of present position is representative.
噪声衰减断面应选在开阔、高差较小的地方，所处位置地表植被具有代表性。
Noise attenuation section should be in place where is wide, relatively light discrepancy in elevation, and where the earth's surface vegetation of present position is representative.
噪声衰减断面应选在开阔、高差较小的地方，所处位置地表植被具有代表性。
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