duration of validity

常见例句

The duration of validity for this certificate exceeds that of its certification authority.
该证书的有效期超过了其证书颁发机构的有效期。
The Ministry of Commerce, within 30 days after receipt of all the above-mentioned documents, shall give the official reply, the duration of validity of which is 180 days.
商务部收到上述全部文件后应在30日内作出原则批复，原则批复有效期180日。
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Thee Ministry of Commerce, within 30 days after receipt of all the above-mentioned documents, shall give the official reply, the duration of validity of which is 180 days.
商务部收到上述全部文件后应在30日内作出原则批复，原则批复有效期180日。。