英语翻译
2.In road vehicle–bridge interaction is frequently assumed that the road profile is constant along deck width.This simplification can be found both when road profile is measured in situ and also when synthetic profiles are employed.This entails that the road profile is the same under all wheels.Nevertheless,when a four wheeled vehicle runs over a road,left and right wheels do not follow the same path,thus the profiles under each side tyres are different,but those profiles are not independent.This can only be
considered when 3D vehicle models are employed.
机翻可以,但不修改通顺的话不予采纳.