指示元素的概念天然物质中能够作为找矿线索，以及对解决某些地质问题具有指示作用的化学元素，称为指示元素。
硒是湘黔汞矿带标型微量指示元素。
Selenium is the guide trace element in the western Hunan - eastern Guizhou mercury deposit.
对这两类样品分别测定不同指示元素，各自成图。
The different indicative elements of the two types of samples were tested and mapped respectively.
同步项目仅指示元素已更改这一事件；但不指示已更改的内容。
Synchronizing projects only indicates that an element has changed; it does not indicate what changed.
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