Revising, writing or assisting in writing teaching materials without demanding any financial request during the valid duration of this contract.
在本合同有效期内，修改，编写或协助编写教案且不要求报酬。
If the valid duration of the patent right expires or the patent right is declared invalid, the patentee may not conclude a patent exploitation license contract relating to that patent with others.
专利权有效期限届满或者专利权被宣布无效的，专利权人不得就该专利与他人订立专利实施许可合同。
The validity of legislation, which includes valid legislation and the force of the valid legislation, has its given objects, spatial extension and temporal duration.
立法效力是指被国家认可的立法活动在一定的空间和时间范围内对特定的对象所产生的作用力。
For all that, the principle of shortening the duration of a campaign by every possible means remains valid.
虽然如此，仍然不破坏我们所说的力争缩短全战役时间的原则。
Gets or sets the maximum duration that the messages are valid when sent by the client.
获取或设置消息在由客户端发送时的最长有效时间。
Gets or sets the maximum duration of time that messages are valid when sent by the service.
获取或设置消息在由服务发送时的最长有效时间。
This property does not set the duration a user is locked out after failing to enter a valid password.
此属性不设置用户输入无效密码后的锁定持续时间。
A double entry visa is valid for 3 to 6 months with duration of each stay 30 days.
两次入境签证有效期一般为三至六个月，每次停留期为30天。
A double entry visa is valid for 3 to 6 months with duration of each stay 30 days.
两次入境签证有效期一般为三至六个月，每次停留期为30天。
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