When an attribute does not have the static modifier, it is said to be an object attribute, as that property is unique for each instance of the class.

当一个属性不具有静态修饰符时，就称其是一个对象属性，因为该属性对类的每个实例都是惟一的。

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A static attribute is of interest to an object modeler only if it can be used to distinguish one class of objects from another.

对象建模者关心静态属性仅当它可以用来区分一类对象与另一类对象。

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A portlet is added in the static layout by using the tag with the class attribute value of portlet-window, as Listing 6 shows.

通过使用带有portlet - window类属性值的标签，来将portlet添加至静态布局中，如列表6所示。

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