If so, then the current entry must be a folder, and you push its name and recursion level onto an auxiliary stack as well as adding it to the tree.

如果具有子代，那么当前条目必须是一个文件夹，您要将其名称和递归级别推到辅助堆栈上并将它们添加到树中。

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Thirdly, the increase of consistency among cells can improve the performance of the stack, and reduce the power and size of the auxiliary systems of the engine.

单电池一致性的提高，可以提高电堆性能，减小辅助系统功率和体积。

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Thirdly, the increase of consistency among cells can improve the performance of the stack, and reduce the power and size of the auxiliary systems of the engine.

单电池一致性的提高，可以提高电堆性能，减小辅助系统功率和体积。

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