It maintained these winds for approximately 18 hours, before weakening slightly late on September 14.

After making a sharp turn northwest, the depression maintained its intensity for 42 hours.

Even with that, we'll only be able to maintain power for sixteen hours.

This operating tempo can be maintained for 24 hours per day, 7 days per week.

It can be maintained for 24-48 hours, after which another route of access should be obtained.

Hurricane Dog maintained its peak intensity for about 18 hours.

The hurricane maintained peak strength for 18 hours before slowly weakening.

The barrage was maintained for approximately two hours to maintain the diversion.

We can maintain that level for twenty hours or better.

In this study, milk was only able to maintain vitality for two hours.