以下为句子列表：
英文: The examination of the urine specimens by gel chromatography and electrophoresis showed that the active ingredient excreted in the urine was partly unchanged and partly depolymerized to molecules of shorter chain lengths.
中文: 用凝胶电泳色谱法检测尿液显示，尿液中的活性药物成分部分为原形，部分解聚成更短的分子链。
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