heading side的用法和样例：
例句
- Then the block in the southern side of this fault is the hanging wall and the block in the northern side of this fault is the footwall.
那么，位于这条断层南侧的岩层是上盘，位于这条断层北侧的岩层则是下盘。 - Comparison of granulometric analysis of the colluvial wedge samples with that on its upper side suggests that their granulometric quality is closely inter-related.
崩积楔样品与作为物源的断层下盘样品的粒度分析对比表明，作为一种近源堆积，崩积楔的粒度特征与其下盘沉积物在粒度分布上有一定的继承性。
