ISO14242里面的原文描述:Three-dimensional coordinate measuring machine, with maximum axial-position error of measurementD, in micrometres, of:D = 4 + 4L*E–6where L is the numerical value of the dimension, expressed in metres.YY/T 0651里面的原文描述:三坐标测量机:以um计,测量D的最大轴向误