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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Welders should be trained according to prescribe by the state authority, and mastering proper techniques of welding, only with special type of certificates then can be allowed to work formally.

焊工必须按国家有关规定经专门的安全作业培训，掌握焊割安全技术，取得特种作业资格证书后，方可上岗操作。

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For the convenience of your query, you only need type certificates / report numbers and can be easily entered into the database.

为方便您的查询， 本系统只需简单输入证书/报告号码便可轻松进入数据库。

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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