Message in Chinese (Simplified) (中文(简体))
不允许进行差异备份，因为差异备份将基于多个基准备份。在简单恢复模式中，不允许进行多个基准的差异备份，并且部分差异备份也不允许进行这样的备份。
Unlocalized message
The differential backup is not allowed because it would be based on more than one base backup. Multi-based differential backups are not allowed in the simple recovery model, and are never allowed for partial differential backups.
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