Plasma-polymerization of ethylene gives films of complex, uncertain structure.

乙烯的等离子聚合得到复杂的，无固定结构的薄膜。

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So the interval model to deal with uncertain structure has simple practical unique advantage.

因而，区间分析用于结构不确定性问题的处理具有简单实用的独特优点。

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This paper takes a new interval method (interval factor method) to study static analysis problem of interval truss uncertain structure.

本文采取了新的区间分析方法(区间因子法)研究分析区间参数非确定性桁架结构的静力分析问题。

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All inquiries concluded that there was a lack of competition in the provision of personal banking services, which made the charging structure difficult for customers to understand and switching accounts an uncertain process.

BBC: OFT warns banks to change or face competition probe