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。
Floor heating tube is a pipe with special application domain. The author compares different property of different pipe, states that it is important to select heating tube material for project planner.
地板采暖管是一种埋入地下、应用领域较为特殊的管材，作者比较了不同管材有其不同的性能，阐明如何选用采暖管材料，是工程设计人员必须注意的问题。
Study on material for special sprayed concrete has been made for the purpose of improvement of sprayed concrete quality and expanding its application.
为提高喷混凝土的质量和拓宽用途，进行了特种喷混凝土材料的试验研究。
Special person should be assigned to keep the welding material. The storekeeper should be trained and knowledgeable regarding the type, application and relevant requirements.
焊接材料应设专人管理，管理员应经培训，掌握本公司所用的焊接材料种类、用途和相关要求。
Special person should be assigned to keep the welding material. The storekeeper should be trained and knowledgeable regarding the type, application and relevant requirements.
焊接材料应设专人管理，管理员应经培训，掌握本公司所用的焊接材料种类、用途和相关要求。
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