Slow-release Urea Preparation by Film Coating with Mechanical Activated Starch Acetate 机械活化醋酸酯淀粉包膜缓释尿素的制备
The amount of soil nitrate nitrogen by fertilizing urea coated by the starch acetate was the highest, for 102.08 mg/ kg. 施用醋酸酯淀粉包膜尿素肥料,硝态氮含量最高,为102.08mg/kg。
An investigation has been made on veneering with two-solution adhesives consisting of urea formaldehyde resin adhesive and polyvinyl acetate resin adhesive. 本文探讨了用脲醛树脂胶与聚醋酸乙烯酯乳液组成的两液胶薄木饰面工艺。
The CuO hollow spheres have been prepared using urea and copper acetate as reactants through hydrothermal treatment. 利用尿素和醋酸铜在水热条件下制备了CuO空心球,这些空心球状结构是由纳米颗粒组装起来的。