| 摘要 |
PROBLEM TO BE SOLVED: To provide superior blasting accuracy and efficiency abrasive that does not lose the surface characteristic of a workpiece. SOLUTION: The abrasive is used in blasting for making a non-straight rib pattern whose ground groove widths differ at places of a plasma display panel, featuring of inorganic particle grain power that has the specific maximum particle diameter, average particle diameter, blasting pitch, particle sharpness, Mohs' hardness, specific gravity, and amorphous particle index depending on the quality of a material to be ground.
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