一、引言为了满足工农业生产和国防、科研的急需,建国以来,国内生产了大批一百吨力以下的三等标准测力计,用以校准各种各样的材料试验机力值,并用于其他方面力值测量中。近几年,有关生产厂又生产了用于激光或光学显微镜测量的一些标准测力计环体。这些测力计首先在标准或基准测力机上进行定度,给出测力计所承受的载荷与变形特征数之间一一对应关系,据此再用来校准材料试验机或校 I. INTRODUCTION In order to meet the urgent needs of industrial and agricultural production and national defense and scientific research, since the founding of the People’s Republic of China, a large number of third-class standard dynamometers of less than 100 tons of force have been domestically produced in China to calibrate a variety of material testing machine force values In other aspects of force measurement. In recent years, the manufacturer has produced some standard dynamometer rings for laser or optical microscopy. These dynamometers are first calibrated on a standard or benchmark dynamometer to give a one-to-one correspondence between the loads borne by the dynamometer and the number of deformation characteristics, which are then used to calibrate the material testing machine or school