large effective target area 大面积有效光幕区
The photoelectric target based on LED and light sensitive element array could improve the sensitivity and enlarge the effective area.
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。
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。
The test on the ore-prospecting target area has demonstrated that geophysical prospecting is quite effective in stereoscopic geological mapping and can lead to accurate metallogenic prognosis.
找矿靶区验证结果表明，物探在立体地质填图中应用效果好，成矿预测准确。
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