The function and technical requirement of precipitated silica used as thickening and abrasive agent in toothpaste are described.

综述了沉淀法二氧化硅用于牙膏增稠剂和磨擦剂的作用和技术要求。

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Ordinary abrasive Bonded Abrasives by the binding agent to form a certain shape ordinary abrasive solid and has a certain strength abrasives.

普通磨料固结磨具是由结合剂将普通磨料固结成一定形状，并具有一定强度的磨具。

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Thus a study is devoted to the effects of phenol aldehyde resin, butadiene nitrile rubber, air pore filling agent and technological conditions on the preformance of abrasive tools.

利用酚醛树脂作为结合剂、环氧树脂作为改良剂制备异型石材磨具，研究环氧树脂、酚醛树脂和致孔填充剂含量对细磨磨具的磨削性能和抛光磨具的抛光性能的影响。

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