foot wall
英汉例句
- A vertical fault has neither a footwall nor a hanging wall.
具有直立斷層麪的斷層既無上磐，也無下磐。 - 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.
那麽，位於這條斷層南側的巖層是上磐，位於這條斷層北側的巖層則是下磐。