maintenance downtime

基本解释

What accounts for the frequent "emergency" maintenance downtime?
是什麽決定經常性的緊急維護時間？
It is a common problem to reduce the downtime associated with a site; however, scheduled maintenance downtime is a necessary evil.
縮短站點的停機時間是一個常見問題；不過，計劃的維護停機時間卻是一件必要的“壞事”。
On the other hand, deploying a new revision of the application will be more involved and may need to be performed as a part of scheduled maintenance downtime.
而另一方麪，部署應用程序的新脩訂涉及的方麪更多，可能需要在計劃維護停止期間執行。

The other 144 is utterly essential to keep lights on when unexpected demand arises from heat waves, outages or maintenance downtime.
FORBES: Brownout
Refineries are running out of headroom to expand existing capacity (refineries routinely run at 95% of capacity now, increasing maintenance requirements and thus downtime) while NIMBY-ism blocks new refineries from being built.
FORBES: Magazine Article