变长记录 meaning in Chinese

variable-lenth reccord

Variable - length record file
变长记录文件
Variable - length record
变长记录
The thesis solves three issues in content index : storage for length - varing record , the chinses word index & phrase index , enhancing the speed of index construction
在内容索引技术中研究了三个问题，即变长记录存储问题，中文词、英文短语的索引问题，提高索引建立速度的问题。
When designing a database structure , it is difficult do deal with records which have variety length . we should consider more on the structure if the database is mainly used in query
在进行数据库结构设计时，对变长记录的处理是一个难点，而建立一个以查询为主的数据库考虑到查询效率，在建库时又要做许多特殊考虑。