《船舶研究杂志》(美) Journal of ShipResearch 1893 造船与轮机工程师协会 (Society of NavalArchitects Marine Engineers)《美国航空与航天学会志》 (美) AIAA Journal 1930 美国航空与航天学会 (American Institute of Aeronautics
Good morning,ladies and gentlemen,may i have your attention?It is a great honor for me to have this opportunity standing ’m very happy to introduce myself to name is year