用service lifetime造句子，“service lifetime”造句

Normal maintenance: normally when the sterilization lamp passes its service lifetime of5000 hr, replace it immediately; otherwise if will lose the sterilization function.

This paper analyzes all kinds of reasons that influences the service lifetime and capacity of VRLA battery, gives the reasons of the failure of the battery.

Although some vacuum sterilizers have not reached their service lifetime, some typically intermittent cracks may be detected on the weld of stiffeners and on the inner wall.