舌突起，齿担一种生理构造，位于大多数软体动物的嘴底部，在这之上齿舌来回收缩以击碎食物。
A structure at the base of the mouth of most mollusks over which the radula is drawn back and forth in breaking up food.
本文根据现代构造理论，认为修水组底部砾岩属于挤压造山作用中晚期的沉积产物。
Based on modern tectonic theory, the authors believe that this conglomerate is a product of middle-late stage sedimentation during a compressional orogeny.
南江地区灯影组位于叠合盆地底部，形成时代最老，经历了多期次构造运动，成岩作用复杂。
The Dengying Formation in Nanjiang area located at the bottom of the superimposed basin, characterized by the old age, the multi-stages of tectonic movement and complex diagenesis.
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