These widgets can be both visible for rendering the UI or hidden for performing background processing.
这些部件可以是可视的，以便用于呈现UI，也可以是隐藏的，以便用于执行后台处理。
The IMPLICITLY HIDDEN attribute on a CREATE or ALTER TABLE statement specifies that the column is not visible in SQL statements unless the column is explicitly referenced by name.
CREATE或ALTERtable语句中的IMPLICITLYhidden属性表示，除非根据名称显式引用列，否则该列在sql语句中不可见。
At any time, one state can be made visible or the entire dynamic panel can be made hidden.
在任何时候，一个国家可以可见或整个动态面板可隐藏。
Toggle Visibility: Links can be visible to or hidden from visitors to your blog.
Toggle可见性：你的博客上的访客可以看到或者看不到链接。
Toggle Visibility: Links can be visible to or hidden from visitors to your blog.
Toggle可见性：你的博客上的访客可以看到或者看不到链接。
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