This gives the Joint STARS aircraft higher operational altitude and longer mission duration, while significantly reducing the maintenance burden of the older engines.

这使联合星飞机飞得更高，延长执行任务的持续时间，同时大大降低了旧发动机的维护负担。

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As for mission duration under powered space flight, Deep space 1 gets to keep that record for another few months until Dawn eclipses that record as well on August 10.

在动力航天的任务期限内，深空1号保持了几个月的记录，直到8月10号曙光号改写了记录。

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To counter these effects on a long-duration mission, say, Mars, astronauts will certainly need to create their own artificial gravity.

比如在火星上，为了在长期任务中对抗这些影响，宇航员肯定需要人为制造重力。

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One needs only to look at the recent international response to flooding in Mozambique to realize that with the added speed, payload and mission duration made possible by tiltrotor technology, vastly larger numbers of victims could have been saved.

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This flight will shortly be followed by another test run to ensure that everything checks out, after which it will begin its first long-duration mission sometime later this month.

ENGADGET: NASA's unmanned Global Hawk completes key test flight

Without giving away the destination of the mission, Iraqi officials might be informed of the number of personnel and vehicles on the mission and its likely duration.

BBC: Iraq arms teams under pressure