To grinding part surfaces with permanent magnet and magnetic grains is a new method of magnetic grinding.

利用永久磁体及磁性磨料对零件表面进行研磨，是磁力研磨中的一种新方法。

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Despite the upheaval of the past four years, the same employees and suppliers are for the most part grinding, polishing and welding for same customers just as they ever did.

ECONOMIST: Westinghouse RIP | The

And lest any potential consumer should worry about grinding his teeth on food laced with the stuff, only one part in 1, 000 needs to be added to achieve protection.

ECONOMIST: Pest control