footwall是什么意思

n.底帮,下盘

1. The footwall is the lower surface of a fault plane in geology.
地质学中的下盘是断层面的下表面。
2. The miners had to drill through the footwall to access the ore deposits.
矿工们不得不钻过下盘才能开采矿床。

（地质学）下盘； （科学）背斜的顶部；