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美国空军正在对 F-22进行新的武器系统升级,预计在2009年进行新武器系统的作战试验。为此,波音公司重新启用了波音757飞行试验台,并对其进行了改装。
The U.S. Air Force is carrying out a new upgrade of its weapons system to the F-22 and expects to conduct combat trials of the new weapons system in 2009. To this end, Boeing has re-enabled the Boeing 757 flight test rig and retrofitted it.