transistor life

例句：

1. 1. The transistor's lifespan is measured in hours.
   晶体管的寿命以小时计。
2. 2.The device requires regular maintenance to ensure its long life expectancy.
   该设备需要定期维护，以确保其长期使用寿命。
3. 3. The manufacturer has promised a longer life expectancy for this new model.
   制造商承诺这款新型号的晶体管有更长的使用寿命。