RUP acknowledges four levels of testing: unit testing, integration testing, system testing, and acceptance testing.

RUP确定了四级测试：单元测试、集成测试、系统测试和验收测试。

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Helen Murray Free invented self-testing equipment that lets diabetics measure their own blood levels of glucose at home.

VOA: special.2010.11.09

The force said it used the combined tactics of high levels of testing, and intelligence-led operations.

BBC: North Wales Police breath tests most drivers in Wales

While the job involves working with much higher voltage levels and different methods of testing equipment, he says he felt prepared for the role.

WSJ: Transitioning From the Military to Civilian Work

However, on Monday it was revealed that a new report carried out on behalf of HSE by the Health and Safety Laboratory (HSL) - which carries out scientific research - that the method of testing carried out by Santia could "overestimate the levels of asbestos fibres as it does not distinguish between asbestos fibres and other fibres such as paper, clothing and skin cells".

BBC: Asbestos: More concerns over Cwmcarn High School future