按重力式挡墙，对该基坑的外部稳定性进行验算；
The gravity retaining wall theory is adopted to proceed exterior stability analysis;
在第四节和第五节我们分别讨论系统（1.1）-（1.4）的外部稳定性与内部稳定性；
In section 2.4 and 2.5, we show that the system (1.1)-(1.4) is externally and internally stable, respectively.
塔锡奥蒂博士指出，更为重要的是，该技术将提供足够的稳定性而取消常常引起感染的外部固定器械。
More important, Dr Tasciotti says, the technique would provide enough stability to do away with external fixation devices, which often cause infections.
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