preliminary sedimentation
preliminary sedimentation
初步沉淀
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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According to the sedimentation, a preliminary assessment was conducted on the polluted standard of the heavy metals in the deposit of the lake, in use of I geo.
对北京大学未名湖沉积物中主要重金属含量随深度的变化进行回归分析，应用地积累指数法对未名湖沉积物中重金属污染程度做出影响评价。
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