对于Barrett以前用过的图Harris引入了反极图这个术语来说明具有纤维织构的样品中相对于纤维轴的不同取向上材料的体积分数P(α,β)。纤维轴相对于晶体点阵的方向是由两个独立的角变量α和β所规定的。在这样一个图里,P给出了各个不同晶体学方向纤维轴密度的分布。P(α,β)可以在二维图里用极射赤面投影中等强线(P=常数)给出。反极图把 The term reversed polarity plot introduced for Barrett’s previously used Harris describes the volume fraction P (α, β) of the material in different orientations with respect to the fiber axis in a fiber textured sample. The direction of the fiber axis with respect to the crystal lattice is dictated by two independent angular variables α and β. In such a graph, P gives the distribution of fiber axis densities for each of the different crystallographic directions. P (α, β) can be given in the two-dimensional map using the mid-intensity projection of extreme red-plane projection (P = constant). Anti-polar map put