transfer unit

字典網

例句：

1. A storage structure of1 to32 disk blocks that is used to store and transfer units of data in files with a relative or indexed file organization. Unlike a block, a bucket can contain only entire records.
   由1至32磁碟信息塊構成的一種存儲結構。結合相對或索引檔案組織，用於檔案中數據單元的存儲和傳送。與信息塊不同的是，存儲桶只能包含整記錄。