And is shot rust-removing, by contrast, cost is high, inspection of the surface cleaning plate are very clean.
而抛丸清砂则相反，费用高，检验平板表面清理的非常干净。
Not the correct use of cast iron plate, if use flat surface roughness of workpiece inspection can cause soon wear etc.
不正确使用铸铁平板，如用平板检验表面粗糙的工件会造成很快磨损等。
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