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1·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 pavement structure and material are the key techniques for desert highway construction.

路面结构与材料是修筑沙漠公路的关键。