The amounts of nitrate and available nitrogen in soil using urea coated by starch acetate were the highest for 102.90 mg / kg and 135.25 mg / kg .

醋酸酯淀粉包膜 尿素肥料，硝态氮和速效氮含量最多，分别为102.90mg/kg和135.25mg/kg；

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。