Message in Chinese (Simplified) (中文(简体))
根据 Schema Component Constraint: Derivation Valid (Restriction, Complex)的规则 5.4,如果派生内容类型为 Mixed,基本内容类型也应为 Mixed。
Unlocalized message
If the derived content type is Mixed, then the base content type should also be Mixed according to rule 5.4 of Schema Component Constraint: Derivation Valid (Restriction, Complex).
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