该产品的电阻值在其有效使用期限内，阻值是逐渐变大。
The resistance of elements increases gradually during their useful life.
耳背式助听器使用纽扣式电池，合格的产品使用寿命应在200小时左右，按每日使用12小时计算，有效使用期限约为两周。
BTE button battery life, the qualified products should be in 200 hours or so, is calculated by using 12 hours a day, period of validity for about two weeks.
我们有办法来保护现有干预措施的有效性和使用期限。
We have strategies in place for protecting the effectiveness and lifespan of existing interventions.
这是产品有效的使用期限。
一般情况下，选择混合纺织物较多，可以非常有效地延长使用期限的同时并且易于打理，在工作服的制作中被广泛运用。
Under normal circumstances, choose more mixed textiles, can be very effective at the same time extend the deadline and easy care, is widely used in the production of clothes.
该保证金使用期限为本协议有效期限延长6个月，到期后，甲方将《付款保函》退还给为乙方开具《付款保函》的银行注销。
The deposit is valid till 6 months after the validity of this agreement. Party A shall return the L/G to the issuing bank for cancellation upon expiry.
本发明能够解决微胶囊发酵剂的储存问题，有效的延长发酵剂的使用期限。
The invention can solve the storage problem of the microcapsule leaven and effectively prolongs the service life of the leaven.
本发明能够解决微胶囊发酵剂的储存问题，有效的延长发酵剂的使用期限。
The invention can solve the storage problem of the microcapsule leaven and effectively prolongs the service life of the leaven.
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