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.
基于滤光片辐射计的新型光辐射标准探测器在野外、机载和星上高精度辐射定标中具有广阔的应用前景。
The trap based filter radiometer is a key unit of new optical radiometric standard detectors, and has potential applications in radiometric calibration of field, air borne and space borne sensors.
信使号的机载磁力探测器可以帮助解决其中部分问题。
Messenger's onboard magnetometer could help sort that one out.
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