The B-2 is hard to detect via infrared, acoustic, electromagnetic, visual or radar signals.
B - 2无法通过红外线、声音、电磁波、视觉上的及雷达信号跟踪侦查。
At a predetermined distance (a), the infrared detector "sees" a circular area that is called the visible surface (b).
在预定的距离(一)，红外探测器“看到”的圆形区域内被称为可见的表面(乙)。
The Texas Instruments TMP006/B Infrared Thermopile Sensor in a Chip-Scale Package (Figure 3) provides non-contact temperature sensing for use in health, beauty, and flame-detection applications.
德州仪器TMP006 / B红外热电堆传感器的晶片级封装（图3）提供非接触式温度传感器用于保健，美容，和火焰检测应用。
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