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本文以外直径为Φ32～Φ89mm，壁厚为3．5mm～8mm小径管对接接头为例。着重介绍椭圆成像通用曝光曲线制作方法。
In this paper, the outside diameter of Φ32 ~ Φ89mm, wall thickness of 3.5mm ~ 8mm small diameter pipe butt joint as an example. Emphasis will be devoted to the production of ellipse imaging general exposure curve.