产品化阶段可以跨越若干次迭代，该阶段包括为发布而进行的产品测试，以及根据用户反馈做出较小调整。
The Transition phase can span several iterations; it includes testing the product in preparation for release and making minor adjustments based on user feedback.
以某大跨越输电塔为例，采用有限元方法建立了塔线模型，并对导线的跌落过程进行模拟。
Taking a long-span transmission tower as example, finite element method was employed to construct a tower-line model and simulate the conduct dropping process.
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