This paper discusses in detail that coulometry quickly measures chemical oxygen demand of low polluted domestic sewage of the school and high polluted industrial sewage.

本文详细论述了库仑法快速测定低污染的校区生活污水和高污染的工业污水中的化学耗氧量。

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Without control of family and school, influenced by the polluted environment of the society, the urban idle minors is a special group who can easily lose their way and need more attention of ours.

其中城市闲散未成年人又是未成年人中的一个特殊群体，他们游离于家庭和学校的控制之外，深受社会不良环境因素的影响，容易走上违法犯罪的道路。

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Pupils of Nan primary school in old polluted area and Simono primary school in control area were selected as investigating subjects and health questionnaire survey were conducted.

通过健康调查表，对日本四日市旧污染区楠小学校及非污染物下野小学校的学生进行有关变态反应性疾病患病情况的流行病学调查。

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