外包装保护和延长保质期的巧克力内。
Overwrap protects and extends the shelf life of the chocolates within.
电子印章的电池也有效地断开到初始上电前电池延长保质期。
An electronic battery seal also extends shelf life by effectively disconnecting the battery prior to initial power-up.
从而提出一些有效延长保质期的方法和加强工厂车间管理的措施。
Some methods for prolonging the storage period and enhancing the factory management were suggested.
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