aif they're only for doog times 如果他们仅是在doog时间[translate] atypical cross section 典型的横断面[translate]
[CrossRef]Ryś D., Judycki J., Jaskuła P., Determination of vehicles load equivalency factors for Polish catalogue of typical flexible and semi-rigid pavement structures , Transportation Research Procedia, Volume 14, 2016, Pages 2382-2391, doi: 10.1016/j.trpro.2016.05.272...