sp.螺型位移, 螺旋运动
spiralling英英释义
名词spiral
a plane curve traced by a point circling about the center but at increasing distances from the center
a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
a continuously accelerating change in the economy
ornament consisting of a curve on a plane that winds around a center with an increasing distance from the center
a structure consisting of something wound in a continuous series of loops
flying downward in a helical path with a large radius
