Message in Chinese (Simplified) (中文(简体))
DomainService“<var>X</var>”中的实体类型“<var>Type Name</var>”是抽象类型，必须使用 KnownTypeAttribute 指定至少一个非抽象派生类型。
Unlocalized message
The entity type '<var>Type Name</var>' in the DomainService '<var>X</var>' is abstract and must use a KnownTypeAttribute to specify at least one non-abstract derived type.
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