This avoids any downtime that can occur during a full upgrade maintenance cycle.

这避免了在全面的升级维护过程中发生停机。

youdao

They do a lot of duplicated work each time, and even need to repeat it completely in later period's upgrade maintenance.

使软件公司在系统开发时不够灵活、每次都在做重复性的工作，在后期的升级维护中甚至要“推倒重来”。

youdao

Responsibility of the job: the installation of computer systems, maintenance, hardware upgrades, maintenance and repair, software upgrade maintenance.

工作职责：计算机系统的安装、维护，硬件的升级、维护及送修，软件的升级维护等。

youdao

The planned work will not address non-statutory maintenance or upgrade the school.

BBC: Cwmcarn High School

Dr Myers is currently leading the team that is undertaking the major maintenance and upgrade work of the LHC to enable it to run at twice the energy when it turns back on in 2015.

BBC: Hadron Collider replica

Analysts at Goldman Sachs suspect that many refiners used their spring maintenance cycle to upgrade their equipment in order to handle heavier, dirtier crudes.

ECONOMIST: Can anything cool the oil market?