Valid time

基本解释

A. Valid time limit: This agreement is valid during the cooperation time and invalid after the exhibition finishes.
协议期限：本协议自双方此次合作之日起至双方合作结束之日止。
The time uncertainty and valid time constraints on resources and activities should be considered in workflow models.
现有的工作流模型中很少考虑时间不确定性，以及资源和变迁的有效时间约束问题。
Postgraduate information contains a lot of time-related information, such as school time, the valid time of postgraduate personal information and achievements.
研究生信息中含有很多与时间有关的信息，比如入学时间，研究生个人信息与研究生成绩的有效时间等。
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The courts grant a divorce to mark the end of a marriage that was valid when entered into, whereas an annulment is for a marriage that at no time was valid (as when one of the parties was under the age of consent at the time of the marriage).
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They've set free the coolest technology from behind the locked lab doors at IBM, Xerox and the telephone companies and aft of the machine-gun-equipped guards at America's defense contractors, all of whom had reasons of their own--perfectly valid at the time--to keep the cool stuff from seeing the light of day.
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Their position is that even if the heirs did have valid claims at one time, the heirs agreed to let Warner and DC keep the copyrights in exchange for increased royalty payments and other compensation.
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