In design of highway drainage system, the rainfall reappearing period is a very important parameter.
在公路排水系统设计中，降雨重现期是一个非常重要的参数。
Drainage system of high-grade highway plays an important role in ensuring the lifetime of structure, avoiding traffic jam and securing vehicles.
高等级公路排水系统对于保障公路结构物的使用寿命和行车的通畅、安全具有十分重要的作用。
The drainage design of urban highway deals with only the surface run-off. It presents a new drainage system considering the road surface, pavement structure, and subgrade (including green belt).
城市快速路排水设计，一般只考虑路面径流的做法，主要从道路表面、路面结构内部和路基(包括绿化带)三方面时排水进行综合介绍。
The practice of domestic and abroad highway construction and service shows that the damages and the lost of highway service capability have closed relation with subgrade drainage system.
国内外公路建设和运营的实践表明，公路使用性能的衰减与丧失很大程度上与路基地下水和地面水的存在有关。
The practice of domestic and abroad highway construction and service shows that the damages and the lost of highway service capability have closed relation with subgrade drainage system.
国内外公路建设和运营的实践表明，公路使用性能的衰减与丧失很大程度上与路基地下水和地面水的存在有关。
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