A digital switching device in telecommunications for routing lines 電訊中用于線路路由的數(shù)字交換裝置。
As many of traffic accidents are associated with the defect in highway designing , the author , by using the investigated materials of the traffic accidents in neimenggu , studies the influence of route line , subgrade , pavement , structure and traffic safety installations to traffic safety from the combination of theory and reality 結(jié)合內(nèi)蒙古交通事故調(diào)查資料,本論文主要在路線、路基、路面、構(gòu)造物和交通工程設(shè)施等方面從理論和實(shí)際相結(jié)合的角度研究了它們對交通安全的影響,人和車因素對交通安全的影響也進(jìn)行了初步探討。