The excising device is based on the brightnessdifference, and the reliability is bad.
现有的装置靠的是亮度差别，可靠性差。
2
When the detection range of the IR thermal imager is calculated by using NETD, the target radiation brightnessdifference must be calculated in the operating wave band.
在采用NETD计算红外热像仪的探测距离时，需要计算目标在热像仪探测波段范围内的辐射亮度差。
3
The difference between these two scenarios may have implications for how these supernovae can be used as "standard candles" — objects of a known brightness — to track vast cosmic distances.