correct grinding的用法和樣例：
例句
- Grinding operations may be classified as precision or nonprecision, depending on the purpose.
磨削可根據不同的目的分為精磨和非精磨。 - The grinding errors can precisely be measured by the line-inductosyn on line and compensated in time by the microcomputer data processing and control system.
由直線感應同步器尺及數顯表和微機數據處理與控制系統實現了對滾珠絲杠精磨過程誤差的在線精密測量，並由計算機控制補償機構對磨削過程的誤差進行實時補償。
