目前，评价土壤中金属植物有效性的方法主要有：化学提取法、植物吸收试验、微生物和酶活性试验及同位素法。
The main methods now to evaluate Pb availability in soil are chemical extraction, plant adsorption, microbial and enzyme activation and isotopes tests.
采用化学连续浸提法对冶炼厂污染土壤中铜的赋存形态进行了比较分析，并且计算了铜的生物有效性系数。
The form of copper occurrence in contaminated soil in a smeltery site was discussed comparatively by continuous chemical digestion, with the coefficient of biologic effectiveness to copper calculated.
应用低阶的模型对一个强放热的化学反应釜模型进行的仿真研究检验了该方法的有效性。
The effectiveness of the method is verified by the simulation research on a strong heat-releasing chemical reactor during which a lower order model is configurated.
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