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。

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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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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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