in an earlier press release issued on february 6, the ministry of defense said the vessel「s sonar dome had been damaged in a collision.
早在二月六号法国媒体声称,国防部说潜艇的声纳罩在碰撞中损坏。
aiming at the sonar dome in submarines, this thesis mainly addresses the vibration and acoustic characteristics of intact and delamination-damaged structures of composite materials.