urea - based NPK的用法和樣例：
例句
- The pilot test on a fluidized bed granulator for urea-based NPK production is presented.
介紹利用流化床造粒機生產尿基複合肥的中間試驗情況。 - Urea based compound fertilizers made by spraying molten urea onto single or triple superphosphate granules can prevent hygroscopicity.
在普鈣和重鈣顆粒上噴塗熔融尿液生產的尿基複合肥還能防止吸濕。
