The growing thermal load of green sand, the quicker recirculation times and the increased requirements on the quality of molding material make new demands on the molding sand preparation.
潮模砂日益增长的热负荷，更快的循环时间以及对造型材料质量要求的提高，对型砂制备提出了更高的要求。
Preparation of high strength concrete with stone sand (stone screenings) and the application of the stone sand in the PHC pipe pile production are presented.
介绍了用人工砂(包括石屑)试配高强混凝土以及人工砂在预应力高强混凝土管桩生产中应用的情况。
Preparation methods of several typical sand textured powder coatings are discussed. Notices during application of sand textured powder coatings are indicated.
运用粉末涂料成膜原理，讨论几种代表性砂纹粉末涂料的制法，并阐述了砂纹型粉末涂料在施工中应注意的问题。
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