通过模拟酸雨浸泡和淋溶实验，弄清楚铬渣的毒性作用和对环境的危害性。

Through simulation acid rain marinate and eluviate experiment, make clear the toxicity and the harm to environment of chromium slag.

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然而，黄土高原中部大多数剖面由于沉积速率较低(特别是S1地层)，加上后期强烈的成壤作用和淋溶作用可能影响其气候记录。

But, low sedimentary rate in many profiles, especially in S1, and following strong pedogenesis and eluviation would have effect on those climate records.

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此外，土壤物质在淋溶、迁移和聚集过程中，还受到各种因素作用距离长短的重要影响。

Furthermore, materials of soil are greatly influenced by the distance in the process of eluviation, migration and accumulation.

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