不要把手机放在磁性媒体（如电脑光盘、信用卡）附近。
Do not place the phone beside magnetic media such as computer discs, credit cards.
实验证明，磁性磨抛光盘换取轻便，降低了噪声，提高了试件的磨抛光精度。
The experiment verified the plate of the magnetism improved the precision of the grind and polish, reduced the noise, and made the interconvert of the plate easily.
实验证明，磁性磨抛光盘换取轻便，降低了噪声，提高了试件的磨抛光精度。
The experiment verified the plate of the magnetism improved the precision of the grind and polish, reduced the noise, and made the interconvert of the plate easily.
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