Get your certificate signed by Certification authority (ca).

获取证书颁发机构(CA)签名的证书。

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Request a digital certificate from a Certification Authority, or.

向认证中心请求数字证书，或者。

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By default, Community Edition Certification Authority USES a self-signed certificate.

缺省情况下，Community Edition证书颁发机构使用一个自签名证书。

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He said federal authorities are "simply taking Boeing's word for it" that the problem has been resolved and by delegating certification authority.

CNN: Can the 'game-changer' still live up to its name?

LOUGHBOROUGH, UK, 28th March 2011, Intelligent Energy, the global clean power systems company, has announced that the Fuel Cell Black Cabs have taken to the roads of London for the first time since being awarded Road Legal status by the UK Vehicle Certification Authority (VCA).

ENGADGET: UK's first fuel cell-powered black cab hits the streets of London

Another problem is certification: China's civil aviation authority would have to be officially recognised by its American and European counterparts before Chinese aircraft could be exported to America or Europe.

ECONOMIST: Aviation in China