The photoelectric target based on LED and light sensitive element array could improve the sensitivity and enlarge the effectivearea.
基于红外发光二极管和光敏元件阵列的光电靶可以提高灵敏度，有效地增大靶面。
2
According to the echo area and intensity change of target cloud, the qualitative judgment that the artificial rainfall is effective or not can be gotten.
根据作业云回波面积和强度的变化，可定性判断人工增雨是否有效。
3
The test on the ore-prospecting targetarea has demonstrated that geophysical prospecting is quite effective in stereoscopic geological mapping and can lead to accurate metallogenic prognosis.