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.
养分的有效性是由土壤物理、化学和生物学特性，特别是根系主导的根际动态过程所决定的。
The availability of mineral nutrients for plants is determined by the chemical, physical and biological characteristics of soils, especially by root-induced changes in the rhizosphere.
应用化学分析、吸附试验和生物诊断方法，系统研究了风沙土磷的有效性和利用率。
The validity and availability of phosphorus in sandy soil was systematically studied using chemical analysis, bio - adsorption test and biological diagnoses.
煤岩学标志、有机地球化学参数和热模拟实验产烃率数据为FMT 值定量评价煤生烃排烃潜力的适用性和有效性提供了佐证。
Marks of coal petrology, parameters of organic geochemistry and yield-oil of thermal simulated experiment are provided evidence for availability of"FMT"evaluation method.
并指出，该方法的有效性在很大程度上取决于水化学分析资料的精度。
It is pointed out that the effectiveness of this method depends largely on the accuracy of water chemistry data.
目的：评价伢典化学机械去龋法治疗乳牙龋齿的有效性和安全性。
Objective: To evaluate the clinical efficacy and safety of a new chemo-mechanical method for the removal of primary dental caries.
重点论述氧气勘查地球化学技术在气田上方和周边的有效性研究成果。
The discussion of the paper is focused on the application result of radon gas exploration geochemistry above the gas pool and its surrounding areas.
重点论述氧气勘查地球化学技术在气田上方和周边的有效性研究成果。
The discussion of the paper is focused on the application result of radon gas exploration geochemistry above the gas pool and its surrounding areas.
应用推荐