高清一级淫片a级中文字幕,亚洲无码免费在线小视频,精品国产群3p交换,国产初次视频观看

2014 National Postdoctoral Forum on Highway Traffic Engineering and Technology was held in Xi'an High-tech Zone on Oct. 16, 2014.

The forum has attracted more than 150 participants including the leaders at all levels, postdoctoral researchers and postdoctoral management workers from dozens of institutions and universities.

The forum has four sub-forums on geological disaster control technology, road, bridge and tunnel engineering, highway greening and environmental protection and postdoctoral researcher management. The experts and scholars had in-depth discussions during the forum. Six academic papers won the prizes in the paper selection activity of the forum.