roll standard中文什么意思

例句与用法

1. from the analysis of traffic flow of huang-huang expressway, the paper reveals the problems of operating administration and trends of traffic flow of huang-huang expressway, reviews and references the advanced experiences of expressway operating administration of national expressway department and overseas, studies and sums the problems including of operating environment, traffic accident, roll standard, system of perform laws, population of environment, scale of the service zone and " holiday economics ", puts forward the suggestion of perfecting operating system, reforming roll manner and practicing comprehensive performing laws
   本文从黄黄高速公路交通流特性分析角度出发，分析了黄黄公路运营管理的现状、存在的问题和未来发展趋势，在总结和借鉴国内国外高速公路运营管理经验的基础上，对高速公路运营环境、交通事故、收费标准、执法体制、环境污染、服务区规模以及在国家经济运行中新出现的经济现象如“假日经济”等若干运营管理问题进行较深入地研究和探讨。提出了完善运行保障系统、改革收费标准制定模式、实行综合执法等建议。