It is feasible that to use CCD device and image processing system in measurement of the modulation transfer function (MTF) of X-ray film and luminescent screen.
本文论证了利用CCD测定X射线胶片和增感屏调制传递函数的可行性，并给出了一种适用于CCD测试数据的处理方法。
Application results show that the device with a lower cost, higher anti-interference capacity is up to the requirements of almost all kinds of liquid level measurement in oil tank and data transfer.
现场应用结果表明：该测量仪生产成本低、抗干扰能力强，可以满足油罐各类液位的测量和数据传送的要求。
Deducing error equation that used vector rotating and transfer of axes theory, Measuring out measurement parameter error on different orthogonality by testing optical-electrical device.
提出误差推导的一种新方法，利用向量旋转及坐标系变换理论推导出误差公式。
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