术语 | sentinel |
释义 | sentinel 标记 1. A symbol marking the beginning or end of some element of information such as a field, item, block tape, etc. 标明诸如字段、项、字组、带等信息单元的开始或结束的一种符号。 2. A tag or flag. 一种标记符或特征位。 3. Also tape mark. In some magnetic tape systems, a short block that identifies the data that precedes it or follows it. It is used in searching to eliminate the need to read the entire contents of headers. 亦指磁带标志。在某些磁带系统中,用一种短信息块标识其前或其后的数据,搜索 数据时用它可不需要读头标中的全部内容。 |
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