Hellow guys, Welcome to my website, and you are watching 비행 중인 모든 항공기에는 4개의 힘이 작용한다. 공기역학적 힘에 관해서 알아 본다. and this vIdeo is uploaded by 비행연구원 at 2020-07-29T02:42:20-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
