ygs67 发表于 2016-4-12 16:41:09

ASTM F2243-11(2013)

ASTM F2243-11(2013) Standard Specification for Required Product Information to be Provided with Powered Parachute Aircraft

admin 发表于 2016-4-13 09:10:04

谢谢您的分享，金币已奖励！
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