手工筛分 meaning in English

hand sieving

Green coffee . size analysis . manual sieving
生咖啡.粒度分析.手工筛分
Methods of test for coffee and coffee products - green coffee : size analysis by manual sieving
咖啡与咖啡制品试验方法.第5部分:生咖啡手工筛分粒度分析
Methods of test for spices and condiments - determination of degree of fineness of grinding - hand sieving method reference method
香料和调味品试验方法.第8部分:研磨细度等级测定手工筛分法