The welders engaged in the welding shall be fully qualified and holding welding certificates from the classification society for the type of welding carried out.

从事的焊接的焊工应该有充分的资格和持有给焊接发证的船级社的证书。

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Gathers and verifies information about the signatures of manifests that belong to a specified activation context and manifest type, and allows certificates to be selected for revocation.

搜集和验证属于所指定启动内容和资讯清单型别的资讯清单之签章的相关资讯，并且允许选取凭证以撤销。

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We especially recommend a timely update of EC type-examination certificates issued before December 29, 2009 in order to adhere to the new Directive and to maintain their validity.

我们特别建议适时更新 2009 年 12 月 29 日之前所颁布的 EC 类型式查验证明，以期符合新指 令的要求并且持续证书有效性。

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Precisely because of widespread financial ignorance, advisors and brokers in Germany are obliged to provide a certain type of brochure with certificates and other investments.

FORBES: Rational Ignorance And Your Money

More and more, she said, authorities are asking her Cuban clients to prove the validity of their birth certificates -- something, she says, that suggests that this type of fraud is on investigators' radar.

CNN: STORY HIGHLIGHTS