Hence, every forensic lab is confronted with cases where the DNA profile obtained from the evidence material does not match that of any known suspect tested, nor anybody in the criminal DNA database.
因此，有的时候从证物上获得的DNA分析结果可能与任何一个嫌疑人的检测结果都不匹配，在罪犯DNA数据库中也找不到相匹配的结果。这样的问题每个法医室都会遇到。
In such cases, it is expected that appearance information estimated from evidence material will help in finding unknown persons.
在这种情况下，人们就希望通过证物推测出的嫌疑人的外貌特征，借此找出这些身份不明的人。
presentation of documentary evidence, material evidence and audio-visual material;
出示书证、物证和视听资料；
The documentary evidence, material evidence, and audio and video materials collected in a case of maritime administrative punishment shall be original documents and materials.
收集海事行政处罚案件的书证、物证和视听资料，应当是原件、原物。
The documentary evidence, material evidence, and audio and video materials collected in a case of maritime administrative punishment shall be original documents and materials.
收集海事行政处罚案件的书证、物证和视听资料，应当是原件、原物。
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