There is no need to explicitly reference the attribute group in either complex type definition.
无需在每个复杂类型定义中显式地引用属性组。
An attribute of an object is represented by a Property which can be a primitive type or a reference to another object.
对象的属性由Property表示，它可以是基元类型，也可以是对另一个对象的引用。
To associate this type with an element, we reference it by associating the type attribute (type="") with the global type name.
要将该类型与一个元素相关联，我们通过将类型属性（type=""）与全局类型名称相关联而引用它。
A specialized type does not need to change the class attribute for elements that it does not specialize, but simply reuses by reference from more generic levels.
专门化类型不一定要改变未专门化元素的class属性，值需要通过引用更一般的层级重用。
A specialized type does not need to change the class attribute for elements that it does not specialize, but simply reuses by reference from more generic levels.
专门化类型不一定要改变未专门化元素的class属性，值需要通过引用更一般的层级重用。
应用推荐