ygs67 发表于 2016-4-13 11:35:54

ASTM F2911-14e1

ASTM F2911-14e1 Standard Practice for Production Acceptance of Small Unmanned Aircraft System (sUAS)

admin 发表于 2016-4-13 14:08:51

谢谢您的分享，金币已奖励！
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