使用寿命

diàn zǐ hé jī xiè zǔ jiàn de shǐ yòng shòu mìng bù huì xiàng guò qù nà bān cháng

电子和机械组件的使用寿命不会像过去那般长。

Electronic and mechanical components don't last as long as they used to.

gāi háng tiān qì de shǐ yòng shòu mìng kuài yào zhōng jié le

该航天器的使用寿命快要终结了。

The spacecraft is near the end of its useful life.

tí gāo le shǐ yòng shòu mìng

提高了使用寿命

optimized the materials of die