有时可以通过机载红外探测器或者雷达发现他们，而有时则需借助数据分析人员。
Sometimes, they can find them with the planes' infrareds, the radars and the analysts who read data 24/7.
红外透镜是决定战斗机中负责目标红外跟踪及探测的关键机载设备光电雷达的红外性能的重要部件。
Infrared lens is one of important components of photoelectricity radar which is the key equipment responsible for infrared following up and surveying targets in a fighter plane.
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