The time in which equipment is in actual use, such as production time, incidental time, development time (program), etc.

指实际使用设备的时间，例如生产时间、附随工作时间、程序开发时间等等。

youdao

That the computer won is remarkable--but at the same time almost incidental.

FORBES: Magazine Article

Since the day Shakespeare died, people have been adapting his work to their own time by writing incidental music for the plays.

NPR: Barenaked Ladies Meet Shakespeare

Bonds forged through adversity are often the strongest and Mowbray's time on the pitch is almost incidental to his five-year spell at Celtic Park.

BBC: Mowbray the natural leader