烟叶中的重金属含量是由其产生的土壤带入的，而不是在生产加工过程中人为添加。
Metal content in tobacco leaf primarily is driven by the metal content of the soil in which it is grown, rather than resulting from processing.27.
生长在重金属污染土壤中的植物通过积累游离脯氨酸和降低抗坏血酸含量等途径来减轻重金属的毒害。
The plants growed in the soil polluted with heavy metals could alleviate the heavy metal poison by accumulation of proline and reduction of antiscorbutic acid content and so on.
通过对试验区内玉米、小麦和土壤中重金属含量的研究，分析比较了作物对重金属的富集能力和健康风险。
Through the study of concentration of heavy metal in farmland from the city epigenetic irrigated area, the difference of their ability of beneficiation and health risks were analyzed and compared.
结果表明各航道底泥中重金属除铅以外，含量均超过《土壤环境质量标准》中的二级标准，其中镉的污染最为严重。
The result showed the heavy metal content in bed mud was over Soil Environmental Quality Standard Two except Pb, in which Cd pollution was the most significant.
结果表明，以单因子污染指数评价，在118个表层土壤样品中，有42个样品的重金属含量超标，超标率为35.6%。
Among the 118 surface soil samples, 42(corresponding to 35.6%) were above the national standards when evaluated with single factor index method.
通过实验发现：当土壤中重金属的含量为0.5%时，最符合蚯蚓的半数致死量。
Through experiments have found that: when the concentration of heavy metals in the soil is 0.5 percentages, it fits the half lethal dose.
如果有必要，我们可以做到把土壤中重金属和农药残余物的含量，降低到几乎为零的水平。
If necessary, the residue of pesticides and heavy metals in artificial soil can be reduced close to zero.
研究表明，微生物特性可作为城市土壤环境中重金属含量变异的有效指标。
Microbial physiological parameters value and ratio have abnormal variation, which reflects that microbial characteristics can be taken as the efficient indicator of alteration of environmental...
研究表明，微生物特性可作为城市土壤环境中重金属含量变异的有效指标。
Microbial physiological parameters value and ratio have abnormal variation, which reflects that microbial characteristics can be taken as the efficient indicator of alteration of environmental...
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