AprilLyrics
Regular Member
- Joined
- Jan 2, 2011
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got some pic
someone in CD use ps measure the lenth of JF17 and J20,
JF17(with Pitot tube) 1593pixel
JF17(without Pitot tube) 1520pixel
J20(with Pitot tube)2275pixel
J20(without Pitot tube)2125pixel
after compared with JF17 and cauculate,they find J20 is 20.3m
someone in CD use ps measure the lenth of JF17 and J20,
JF17(with Pitot tube) 1593pixel
JF17(without Pitot tube) 1520pixel
J20(with Pitot tube)2275pixel
J20(without Pitot tube)2125pixel
after compared with JF17 and cauculate,they find J20 is 20.3m