cross fall

• 横向,横斜度,横坡

cross fall的用法和样例：

例句

1. Numerous deposits are clustered in a number of cross trends.
   许多矿床集中在许多横向带中。
2. A gradient of 1 in 4 is a rise of fall of one metre for every four metres forward.
   四分之一的坡度是指每前进四米便升高或下降一米。