position indicator

基本解释

Observe the mechanical/electrical switch position indicator.
观察接地开关机械/电气位置指示；
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A floorstand for handwheel actuated valves allows operation from above. Included is handwheel, non-rising stem, fittings, extension, and floorstand with gate position indicator.
用于手轮执行器阀门上的地轴承架可以在上方对阀门进行操作，包括手轮，暗杆，连接件，加长件，以及带闸板位置指示器的地轴承架。
Each block of output code within a repeated sequence has its own internal position indicator, and any control within such a block can access that indicator through the index() XPath extension.
重复序列中的每个输出代码块都有自己的内部位置指示符，代码块中的任何控件都可以通过 XPath 扩展 index() 访问这个指示符。

In my book, this is a lagging indicator, and as such is only used as confirmation of a position that I am already in.
FORBES: Watching AONE For A Bottom