abrasive powder

基本解释

Due to extremely slow speed, should select a very fine abrasive powder to extract the coffee.
由於速度極慢，應選取研磨得極細的咖啡粉來萃取。
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.
砂佈、砂紙及以其他材料爲底的類似品，不論是否裁切、縫郃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.
單晶研粉的輻照損傷在400℃完全恢複，微晶的在355℃完全恢複。