...桶盖 但是改良后需要费电，当我们试著改善”使用方便性（Convenience of use）”这个 参数时，”物质浪费（Waste of substance）” 这个参数时反而会得到反效果而越来越差。
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The content of flavonoids in waste liquid of alcohol production from sugarcane molasses was determined by spectrophotometry using rutin as standard substance.
以芦丁为标准物质，用分光光度法测定了甘蔗糖蜜酒精废液中黄酮类化合物的含量。
The formation process of this substance provides a new way to remove the oil in food waste.
该物质的形成对餐厨垃圾中油脂的去除提供了新的思路和途径。
Bio - degradation role of aerobiotic organic substance and relationships between biological degradation and dissolved oxygen were stated, which provided theoretical basis for waste water reatment.
本文论述了需氧有机物的生物降解作用以及与溶解氧平衡的关系，从而为污水治理提供理论依据。
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