sulphur-basedBNC²³⁶²¹³⁺¹ 例句 The production technology for high- concentration sulphur-based NPK compound fertilizer is researched and conversion of potassium chloride, slurry and product properties are discussed. 对硫基氮磷钾高浓度复合肥生产工艺进行了研究，介绍了硫酸钾的转化率、料浆性质和产品性能。 cnki