Because of the special geographical condition of the desert area, the pavement material design and application for desert highway must comply with the principle of utility, feasibility and economy.
考虑到沙漠地区特殊的地理条件，沙漠公路路面材料的设计和应用要遵循适用性、可行性和经济性的原则。
2
The types of highway construction site lie on the physical geography condition and the geological condition of terrane whose basic parameters are fuzzy and uncertainty.