disk request word

例句：

1. 1.The disk request word is a critical part of the operating system.
   磁盘请求字是操作系统中至关重要的部分。
2. 2. The disk request word is used to indicate that a file is being accessed by another process.
   磁盘请求字用于指示另一个进程正在访问文件。
3. 3. The disk request word is also used to prevent accidental deletion of important data.
   磁盘请求字还用于防止意外删除重要数据。