IS IN编码是一个包含12个字符的字母数字编码，用于在交易和结算时统一标识证券。
The ISIN code is a 12-character alpha-numerical code that serves for uniform identification of a security at trading and settlement.
目的介绍记录颅颌面部骨折一种新的分类方法：字母-数字编码系统及其初步临床应用。
Objective To introduce a new classification for the craniofacial fractures: the alpha-numeric coding system and its clinical application.
目的介绍记录颅颌面部骨折一种新的分类方法：字母-数字编码系统及其初步临床应用。
Objective To introduce a new classification for the craniofacial fractures: the alpha-numeric coding system and its clinical application.
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