经过调查分析，最后确认污泥膨胀是由微量金属元素缺乏所致。
Through investigation analysis it is confirmed finally that trace metal element lacks to cause the sludge bulking.
在信息公开化的今天，我们经过调查分析对比，就可以防止买了价高质次的产品。
In the information open today, we through investigation and comparative analysis, we can prevent the buying price of high-quality products.
日前，美国耶鲁大学和哥伦比亚大学研究人员经过调查分析后得出结论，冰岛在163个国家的环境性能指标评选中高居第一，当选世界上最干净国家。
Iceland is the cleanest country in the world, according to researchers at Yale and Columbia universities. The Nordic island ranks 1st out of 163 countries on their Environmental Performance Index.
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