您可以选取项目，无论树状目录的展开状态是否显示该项目。
You can select items regardless of whether the expansion state of the tree shows the item.
在此方法基础上建立了扩展厢式车厢体展开状态下有限元模型，并对其进行了强度分析。
On the basis of the method, the FEA (finite element analysis) model of the van body in extendable work condition is established and the structure strength analysis of the van body is proceeded.
是一个数字，它指示了大纲的哪一行应该在窗口的最上面。该数字是在考虑了“展开状态”后计算出来的。
Is a number, saying which line of the outline is displayed on the top line of the window. This number is calculated with the expansion state already applied.
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