Version addicals-made convexification and concaue riceh, soongorica and extracranium grainand a deeper purpose, rock bottom and most of the same plane, from peak to the Valley of skirtboard is steep.

• 版基的砂目由多数的凸峰和瘪谷构不败，砂目的瘪谷较浅，谷底不小众处在同一个不平面上，从峰至谷的侧壁则比力峻峭。