至于软件维护，由于它是一个长期的不可预料的问题，本文中只阐述了相关理论知识。

For software maintenance, because it is a long-term problem of unpredictable, this paper expounded in relevant theoretical knowledge.

youdao

至于软件维护，由于它是一个长期的不可预料的问题，本文中只阐述了相关理论知识。

For software maintenance, because it is a long-term problem of unpredictable, this paper expounded in relevant theoretical knowledge.

youdao