产状的英文：
occurrence
- Knowledge of the occurrence of chromite deposits is likewise incomplete
对于铬铁矿矿层产状的了解同样是不完整的。
n. 发生，出现；遭遇，事件
- The occurrence of such things is by no means fortuitous.
出现这种问题绝不是偶然的。 - The occurrence of such things is by no means fortuitous
出现这种问题绝不是偶然的。 - In data base terminology, a single instance, for example, a set occurrence, a record occurrence.
在数据库术语中，一个单一实例，例如，一组具体值，一个记录的具体值。 - We regret the occurrence of things that are bad.
我们对坏事的出现感到遗憾。 - History is dotted with rum and inexplicable occurrences.
历史中不时穿插着一些离奇而难以说明的事件。
