On this basis, an unascertained model of air quality simulation is established.

在此基础上，应建立未确知空气质量模拟模型。

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The definition and theorems on unascertained continuous function between two unascertained topological Spaces are introduced.

给出二未确知拓扑空间中的未确知连续函数的定义及定理。

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The uncertainty of objective is divided into four kinds in this paper. There are randomness, fuzziness, greyness and unascertained.

本文根据不确定性信息的不同表现将不确定性分为随机性、模糊性、灰性和未确知性四种不确定性。

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An inquest in September 2011 concluded the cause of death was "unascertained".

BBC: Joanne Foreman family wins right to new inquest bid

The inquest at Oxford Coroner's Court was told the medical cause of death was unascertained but probably caused unlawfully by a third party.

BBC: Becky Godden farmland grave: Narrative verdict recorded

The jury found that Mr Robertson died from an unascertained injury.

BBC: An RNLI lifeboat