The natural abrasive has special effect and superior performance than artificial abrasive in some field.
天然磨料有其独特的作用，在某些加工领域，天然磨料甚至具有比人造磨料更优越的性能。
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。
This paper elaborates on the Artificial Neural Network application to the abrasive water jet cutting technology.
主要叙述了人工神经网络理论在磨料水射流切割技术中的应用。
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