1)Midperpendicular,中垂线2)perpendicular bisectors feature,中垂线分割3)sagging,中垂4)middle perpendicular offset,中垂距5)hogging and sagging,中拱中垂6)mid vertical plane,中垂面
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.
