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测绘三孔法兰中心圆直径时,由于其任意两孔连线不通过法兰中心,不象测量四孔法兰可以直接测得孔的中心圆直径。我们用如下方法对三孔法兰中心圆直径进行测量。
Mapping three-hole flange center circle diameter, the connection between any two holes does not pass through the flange center, unlike the measurement of four-hole flange can directly measure the hole diameter of the center circle. We use the following method to measure the center hole diameter of the three-hole flange.