zign.锯齿形转角(急转)v.转弯Zigui basin秭归盆地Zigong City自贡市Zigetang Co兹格塘错Zigui County秭归县zig terrance反坡式梯田Zigetang Lake青藏高原Zigongosaurusn.自贡龙zig zag plane曲折面Zigui-Wufeng秭归-五峰段zig-zag type之字型(Z型), 曲折型, 锯齿型