1)sagging stress,中垂应力2)sagging,中垂3)middle perpendicular offset,中垂距4)hogging and sagging,中拱中垂5)mid vertical plane,中垂面6)Midperpendicular,中垂线
用法例句
It indicates that this squeal is due to the lack of stiffness of the structure of the ship,leading to extensive sagging and shaft system decentration,making the forward seal and the propeller-shaft clamp ring collide,and then making squeal noise.