换算当量 meaning in English

conversion equivalent

Then the series of images can be connected into a w hole one by using the technique of image mapping . the real size of the flaw feature values ( such as area , length and width ) can be calculated by scaling the pixel on the spot
在计算疵病实际尺寸的时候，还必须进行现场定标，以得到图像中的像素和实际尺寸的换算当量，然后利用换算当量计算图像的特征值（如疵病的面积、长度和宽度等）。