继续阅读本文，了解如何从焦点跟踪指示器开始生成这种视觉效果。
Read on for a description of how to create this visual, beginning with a focus-tracking designator.
轧件在轧制线上的位置及其数据在数据区的起始地址完全由该轧件所在区段的跟踪指示器的内容所确定。
The mill bar's position on the mill line and the initial address of it's data in the data area are completely determined by the contents of the tracking pointer.
在几天的测试中，指示器或跟踪器跟踪一个红外光源，并引导激光束击中目标。
During tests over several days, the pointer or tracker tracked an IR source and directed a laser beam at that source.
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