certificationn.证明;认证;证书;鉴定
certification of completion竣工合格证书
certification by attainment以成绩鉴定水平
Certification of Compliance遵守证书
certification of maintenance维修证明
Certification Administration证件管理
certification marking system产品合格检验证明制度
certification on tax payment纳税证明书
certification and inspection发证检验