upper wall的用法和樣例：
例句
- There are many erosional gullies in the upper slope of this domain, manifesting an erosion dominant region.
斷層上盤常發育斜坡盆地，沈積物可能為半遠洋沈積物或濁流堆積物。 - According to fault intersecting lines acquired, tri-prism volume elements are constructed for the hanging wall and footwall hanging wall respectively in the fault region.
在斷層區域內，根據求得的地層斷層交線，分別將斷層上盤和下盤建立三稜柱體元。
