Due to the appearance and the study of the ornithopter and flexible-wing micro air vehicles,etc.,the time-varying systems become more and more important and ubi
Nine square concrete columns including 6 CFRP/ECCs and 3 concrete columns are prepared,which have cross-section of 200 mm×200 mm and height of 600 mm.The C
<正>This paper presents a fundamental gaskinetic study on high speed rarefied jets expanding into vacuum from a cluster of planar exits.Based on the correspondi