Among the five steps the impact identification, impact prediction and impact evaluation are most important. For each step there are different methods and considerations.
在上述五个步骤中，以影响识别、影响预测和影响评价三者最为重要，以下就这三者分别进行叙述。
Methods The concentration of chlorine dioxide was determined by propandioic acid-iodometry and five-step iodometry.
方法采用丙二酸碘量法与五步碘量法测定二氧化氯含量，采用悬液定量杀菌试验方法进行杀菌效果评价。
Among the five steps the impact identification, impact prediction and impact evaluation are most important. For each step there are different methods and considerations.
评价的步骤主要包括五步：即影响识别、影响预测、影响评价、拟定保护措施和监测方案。
Methods Five-step iodometry was used to determine the concentration of chlorine dioxide, and UV-spectrophotometry was applied to detect the stability of chlorine dioxide solution.
方法采用五步碘量法测定二氧化氯含量，紫外分光光度法测定二氧化氯消毒剂的稳定性。
Methods Five-step iodometry was used to determine the concentration of chlorine dioxide, and UV-spectrophotometry was applied to detect the stability of chlorine dioxide solution.
方法采用五步碘量法测定二氧化氯含量，紫外分光光度法测定二氧化氯消毒剂的稳定性。
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