Highway Maintenance and Pavement Preservation Strategies in Canada 的意思

Highway Maintenance and Pavement Preservation Strategies in Canada 的意思 maintenance 英语翻译The U.S.Federal Highway Administration,FHWA (1999a) defines pavement preservation as:“all activities undertaken to provide and maintain serviceable roadways; this includes corrective maintenance and preventive maintenance,as well as min highway,highway 歌词 maintenance是什么意思? undergoing maintenance maintenance是什么意思 service&maintenance maintenance work extraterrestrial highway HIGHWAY怎么样 数学highway tooling-maintenance是什么意思 maintenance的意思 block-maintenance是什么意思 maintenance instructons翻译汉语 preventative maintenance是什么意思 defer maintenance什么意思