The US air Force purchased its first MERLIN bird radar system in 2003 and has installed six systems at US air bases and ranges to date.

美空军在2003年购买了第一套MERLIN鸟击雷达系统，并安装了在美国6个空军基地。

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You need to activate Rational Performance Tester with a purchased license key after the expiration date to continue using it.

在有效期到期后，您需要购买一个商业证书密钥来激活Rational Performance Tester才能继续使用它。

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It is similar to the dock date for a purchased item.

这是类似的被告席上的日期为购买项目。

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About 700 ambulances have been purchased to date, while efforts are being made to improve emergency services, hospitals and the training of medical personnel.

BBC: Fifa medical chief 'satisfied'

To date, Nair and Davin have purchased scores of trunks at auctions and at flea markets.

WSJ: Luxury Trunks, Reinvented

In other cases, a car would have been eligible had it been a different model year or purchased at a later date.

FORBES: Electric Car Shocker: 20% of Plug-In and Hybrid Tax Credits Wrongly Claimed