切断比一般定义为：在传真的事务处理中，已建立的传真呼叫在全部页数传完之前被终止的百分率。

The cut-off ratio may be defined in general, as the percentage of established facsimile calls that are terminated prior to the transmittal of all the pages in the facsimile transaction.

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由于失效模式复杂，主要必须对切断明确定义，使不同来源的切断比测量值之间，可以作有效的比较。

Since the failure modes are complex, it is important to define cut-offs precisely so that valid comparisons can be made between cut-off ratio measurements from a variety of sources.

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葡萄牙人瓦斯科·达·伽马在15世纪末环绕南非航行至印度，而到1502年的时候跨阿巴拉比的商队路线因政治动乱而被切断。

The Portuguese Vasco da Gama's Voyage around southern Africa to India took place at the end of the fifteenth century, and by 1502 the trans-Abrabian caravan route had been cut off by political unrest.

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