不幸的是，JSF 规范天真地引导开发人员将大多数 backing bean 放入 conversation 作用域中 —— 甚至可以在 “方便的” 作用域内调用它。

Unfortunately, the JSF specification naively leads developers down a path of placing most backing beans in session scope -- you could even call it "convenient" scope.

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引导：形式内联域状态验证？

Bootstrap: Validation states with form-inline fields?

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本算法适用于平面多面体，通过面域作为中介，容易实现与模型引导方法的融合，从而拓展到二次曲面体的重。

This algorithm can deal with polyhedral model only, however, with the introduction of face region, it can be combined with model o.

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