这项设计可增加飞行时间达10小时，并已交付给一家美国客户。
This option increases flight time to up to 10 hours and has already been delivered to a U.S. customer.
头两架飞机现已交付给美国空军，且交付将一直持续到2011年。
The first two aircraft have now been delivered to the USAF and deliveries will continue into 2011.
官方人员补充到：“正在全球进行问题讨论，例如如何处理已交付给经销商的产品。
Global discussions are under way about matters such as how to deal with products delivered to dealers.
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