项目组合管理治理提供了连续性、调整，及演进的相关性的要素，如果想要一个组织过程被持续的使用，那这些要素是必要的。

Portfolio management governance provides the elements of continuity, adjustment, and evolving relevance, which is necessary if an organizational process is to continue to be used.

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追踪的目的就是确保相关工作产品的连续性。

The purpose of traceability is to ensure consistency between related work products.

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去除声波数据的周期性、连续性、相关性，提取其随机性。

Periodicity, continuity and correlation of sound data are wiped off and randomicity is extracted.

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