the wear of abrasive powder 磨粒磨损
optical-powder or grin abrasive 光学研磨材料 ; 磁性光盘
Powder or Grin Abrasive 光学研磨材料
Due to extremely slow speed, should select a very fine abrasive powder to extract the coffee.
由于速度极慢，应选取研磨得极细的咖啡粉来萃取。
For cleaning, please do not use the abrasive cloth, abrasive powder, hard brush or any tool that can scratch this product.
清洗时请勿使用菜瓜布、磨沙粉或硬毛刷等会刮伤本产品的工具。
Natural or artificial abrasive powder or grain, on a base of textile material, of paper, of paperboard or of other materials, whether or not cut to shape or sewn or otherwise made up.
砂布、砂纸及以其他材料为底的类似品，不论是否裁切、缝合或用其他方法加工成形。
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