眼壁

• When strong typhoons show a double eye - walled structure , they are often in the process of undergoing a " eye wall replacement cycle " where a new eye wall develops and replaces an existing one
  现时普遍认为当强台风出现双重眼壁结构时，它们是处于眼壁更替周期：新的眼壁发展，替代当时的旧眼壁。