Grinding wheels incorporate natural or synthetic abrasives which have been bonded with a vitrified or organic binder ; - thin grinding wheels are formed from bonded abrasives which have been reinforced with fiberglass mesh -固结磨具或称砂轮：其中含有天然或合成磨料并使用无机玻璃或有机树脂作为结合剂，使磨料颗粒固结成形，固结磨具中也包括使用玻璃纤维网片增强的树脂切割片
