精确的血栓形成的极限时间有待实验确定。

The accurate limit time of thrombosis will be defined in experiment.

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在此基础上提出了隧道衬砌火灾损伤等级的划分标准与耐火极限时间。

Then, the divide standard of damage grade and the enduring fire limit time of the tunnel lining caused by fire accident are discussed.

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在经典极限下，导出了循环的有限时间热力学性能界限和优化准则。

The finite time thermodynamic performance bound and optimization criterion for these cycles are derived.

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It wasn't the fact that they were running that time and they say "Oops! We are over the speed limit!

不是因为跑到那个时间,就说“不好，超过速度极限了！

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