清砂费用
Sand cleaning fee
以上为机器翻译结果，长、整句建议使用 人工翻译 。
人工清砂费用低，有些局部处理的不是很干净。
Artificial rust-removing expenses low, some local processing is not very clean.
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而抛丸清砂则相反，费用高，检验平板表面清理的非常干净。
And is shot rust-removing, by contrast, cost is high, inspection of the surface cleaning plate are very clean.
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