An event takes an imaginary journey, known as propagation, through the tree structure of the document.

事件按照文档的树状结构进行假想的旅行，这个过程称为传播。

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Background structure for CME propagation is obtained by the time relaxation method, which guarantees it stable and self-consistent.

CME传播所需的背景结构是采用时间松弛方法计算得到的，这保证背景结构是自洽和稳定的。

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The propagation characteristics of PCF are wholly determined by its transversal structure.

光子晶体光纤的传输特性完全由其横向结构决定。

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Our first insight suggests that sKyWIper is another info-stealer malware with a modular structure incorporating multiple propagation and attack techniques, but further analysis may discover components with other functionalities.

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