abrasive powder

基本解释

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。
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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The radiation damage can be recovered completely at 400℃ for the abrasive powder, and at 355℃ for the crystallite.
单晶研粉的辐照损伤在400℃完全恢复，微晶的在355℃完全恢复。