减小汇水区面积的不确定性可提高其他参数的灵敏度，有利于参数的有效识别。
Reduction of the catchment area could increase the sensitivity of other parameters, providing better condition for parameter calibration.
理论和实验证明，这些措施有效地提高了系统的灵敏度和稳定性。
Theory and experimental results proved that these methods can improve the sensitivity and stability effectively.
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。
The photoelectric target based on LED and light sensitive element array could improve the sensitivity and enlarge the effective area.
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