... duration vector : 期向量，期间向量 duration validity : 有效期间 duration of service : 设备使用年限 ...
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duration of validity [计] 有效时间 ; [科技] 有效期间 ; 有效期
Duration and Validity of Certificate 期限及有效期
Validity duration of E-cash 电子现金有效期
The period of validity of the aforementioned certificates is the duration of the holders' permitted stay in China.
上述居留证件的有效期限为准许持证人在中国居留的期限。
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。
The period of licence validity shall be of reasonable duration and not be so short as to preclude imports.
许可证的有效期应合理，不得过短而妨碍进口。
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