The shift leader a day with bad board to first tested grinding mark.
当班组长每天要用不良板来先调试好磨痕。
Water mark pattern is minor, waxing and polishing to cure severe grinding or painting.
水痕纹属细微时，打蜡抛光可治好；严峻时需研磨或喷漆。
Water mark pattern is minor, waxing and polishing to cure severe grinding or painting.
水痕纹属细微时，打蜡抛光可治好；严峻时需研磨或喷漆。
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