Select a duration period for the workforce contract.

选择员工团队合同的期限。

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During storage or in operation the frequency of the crystal resonator will change according to the duration period, which is define as aging in crystal field.

石英谐振器在贮存、使用过程中频率随时间变化的现象称为老化。

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Whereas the cache API is designed to cache data for a long period or until some condition is met, per-request caching simply means caching the data for the duration of the request.

缓存api的设计目的是为了将数据缓存较长的一段时间，或者缓存至满足某些条件时，但每请求缓存则意味着只将数据缓存为该请求的持续时间。

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Over past crises, the duration of the period of rising unemployment averaged nearly five years, with a mean increase in the unemployment rate of seven percentage points, which would bring the U.S. to double digits.

WSJ: Opinion: Expect a Prolonged Slump

And the duration of this transition period must be agreed, and the effectiveness of security arrangements must be demonstrated.

WHITEHOUSE: Moment of Opportunity: American Diplomacy in the Middle East & North Africa | The White House

With more than 200 people killed since the Oslo agreement more than in any other period of that duration since Israel's beginnings it is no wonder that many Israelis had their doubts about the Oslo accord.

ECONOMIST: Israel's intransigence