英语语法分析

During tests over several days, the pointer or tracker tracked an IR source and directed a laser beam at that source.

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。

Ir is found in high concentrations in some meteorites, in which the solar system's original chemical composition is preserved.

人们发现，在一些保存着太阳系原始化学成分的陨石中，铱元素的含量很高。

Since most camera flashes emit IR along with their burst of visible light, the one substitution allowed the prototype to transmit and record infrared light.

由于大多数相机闪光灯在发出可见光同时就会发射出红外线，这一替换使得原型机能够发送并记录红外线。