certification

n. 证明, 保证，鉴定

Judicial certification of the validity of a will.

遗嘱检验文件遗嘱有效的法律证明文件

A certification on an affidavit declaring when, where, and before whom it was sworn.

宣誓证明附在宣誓书上的证明，声明何时、何地、在何人监誓下进行宣誓