短語詞組短語axial snap -back 軸向回跳snap -back repeller 速返斥子deep Snap -back 深位移回跳billow snap -back forming 氣脹快速反吸成型Snap -back repeller theory 返回擴張不動點理論vacuum snap -back forming 陽模反吸真空成型 返回 snap-back