公路等级的英文
highway classification
例句与用法
更多例句： 下一页- Code for highway classification
公路等级代码 - It is also the key factor to improve the highway grade in these areas . the sand harm usually happens and the roadbed is obviously influenced by the sand foundation stability condition and the groundwater if the roadbed earthfill height is low . on the contrary , the wind erosion usually happens if the height is high
公路路基的合理高度是保证沙漠公路不产生沙害的主要因素之一，同时是提高沙漠地区公路等级的关键，沙漠公路路基填土高度低，则易出现沙埋病害，路基受沙漠地基稳定状况及地下水的影响显著，反之，则易出现风蚀病害，并存在高填方路基和稳定性问题，工程造价相应增加。 - In light of the strategy " spuring native demand " and " developing western region " in our country , constructing of highway is advanced much and the grade and network of highway has been improved . these years the mileage of expressway increases constantly , the function of highway network is becoming stronger and the economic benefits of highway constructing is more obvious
尤其是近几年来，国家实施“拉动内需” 、 “西部开发”战略，公路建设突飞猛进，公路等级和路网整体水平不断提高，高速公路的里程不断增长，公路运输网络功能日益强大，公路建设经济效益越来越明显。 - The research test of this discussion as follows : making investigation and research to overseas related materials ; make investigation to built highways in desert areas , dozens of routes and nearly 100 road sections have been surveyed , among them two highways have been taken as the chief investigation objects , they are " 210 national highways - first grade highways from bao tou to dong sheng " and " the section of nei meng a la shan meng s307 from shang de to meng gen " ; the relationship between windblown sand drift and the roadred height wind tunnel test ; make investigation to the tested road sections and subengineerings then make statistics and study according to the test outcome ; the stability analysis of different roadbed height ; the analysis of roadbed economy
本课题的研究工作包括：对国外相关资料的调研分析；对已建沙漠地区公路进行调查、观测了十余条线路，近百段路段，以‘ 210国道包头至东胜一级公路’ 、 ‘内蒙阿拉善盟s307尚德至孟根段’为主要调查对象；风沙流路基高度的关系、风洞试验；对调查路段及依托工程调查、观测结果统计研究；不同高度下路基稳定性分析；路基经济性分析；按照沙丘类型及公路等级提出路基合理高度推荐值。
