图1是我单位多年来在超高强度钢拉伸试验时使用的诺模图(圆形试样)。图上有四根等距离的刻度轴(实际上是五根,因为左数第三根的左右两面各表示不同的刻度值)。这个图是利用两个诺模图拼合而成的。在数第一、二和第三根轴的右半部构成计算强度的诺模图,各轴分别表示载荷大小(P)、试样原直径(do)和强度值(σ)。同样,左数第二根、第三根的左半部 Fig. 1 is the nomogram (circular specimen) used by our unit over the years in the tensile test of ultra high strength steel. There are four equally spaced scale axes on the graph (actually five because the left and right third of the third left and right represent different scale values). This diagram is made using two nomograms. The right half of the first, second, and third axes forms a nomogram of calculated intensity, with each axis representing the load size (P), the original diameter of the sample (do), and the intensity value (σ). Similarly, the second left, third left half