allowable level of concentration
allowable level of concentration
允许浓度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The results showed that the toxicity of the treated wastes was greatly reduced, and the concentration of Arsenic ion and Chromium ion in the leachate reached the allowable level.
经稳定化处理后的废渣毒性大有降低，溶出液中砷、铬含量在容许范围。
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