在微机系统核子秤的被测物料中，物料颗粒度与几何分布的非线性影响到核子秤的测量精度，它可能产生明显的测量误差。在实际问题背景下，使用几何模型法系统分析这些影响，分别从一维、二维、三维情况进行讨论，得出了二个经验公式，全面解决了核子皮带秤被测物料非线性分布问题的主要理论问题，并在处理现场问题中得到实际的应用 In the computer system of the nuclear scale of the measured material, the particle size and geometry of the nonlinear distribution of the impact of the accuracy of the nuclear scale measurement, it may have significant measurement errors. In the background of practical problems, these models are systematically analyzed using the geometric model method. The two-dimensional, two-dimensional and three-dimensional models are discussed respectively. Two empirical formulas are obtained to completely solve the problem of nonlinear distribution of the measured material of the nuclear belt scale The main theoretical problems, and in dealing with the actual problems in the field of application