The problem of state feedback robust stability for a class of uncertainty time delay continuous systems with state delay is studied.

研究了一类存在状态滞后的不确定时滞连续系统的状态反馈鲁棒稳定问题。

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It was a time of terrible uncertainty.

那是一段非常不确定的时期。

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And in a time of economic uncertainty, we need tax certainty.

在经济不确定的时候，我们的税收需要稳定。

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And it came at a time of uncertainty in relations between the United States and Japan.

VOA: standard.2009.11.13

The president says the class of 2009 is leaving college at a time of economic uncertainty.

VOA: standard.2009.05.14

Last month's murder of both the president and the army chief of staff has heightened the country's political uncertainty at a time when Luciani says the government must move quickly to protect a generation exposed to AIDS.

VOA: standard.2009.04.24

Dr Lieu supposed that light, travelling over very long distances, would have to spread out a bit if there was any uncertainty in time.

ECONOMIST: Planck-scale physics

The report notes that employers endure significant uncertainty, time, and expense (government fees and legal costs) in hiring skilled foreign nationals, indicating that hiring the best candidate for the job, whether U.S.-born or foreign-born, is the primary consideration for employers.

FORBES: New GAO Report Makes the Case for a More Open Policy on Foreign-Born Professionals, But You Need to Read it Closely to Know Why

The oil and gas industry has to live with that uncertainty all the time.

BBC: Osborne viewed from Scotland