影响聚合物包膜肥料养分释放的因素主要有：膜厚、颗粒半径、扩散系数、养分组成及其溶解特性。
The factors that influence the nutrients release behavior are as followings: membrane thickness, granule radius, diffusion coefficient, nutrients composition and nutrient dissolving property.
AETNA集团是生产和销售拉伸薄膜缠绕包装机、包膜机和冷拉伸膜机的公司。
AETNA GROUP produces and sells on a worldwide basis stretch wrapping machines, horizontally banding and shrink film wrappers.
并用这一工艺技术将一种钾型保水剂成功地聚合成膜在尿素颗粒表面，制成了钾型超强保水剂包膜尿素。
And the surface of urea granular successfully coated by a potassium-type hydrogels using this coating technique, and newly type of WSCU had been made out.
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