本文从理论上证明并抽样统计验证了任意方向位置度误差服从瑞利分布；
The paper has proved theoretically and verified statistically by sampling that the distribution of the position error in arbitrary direction is Rayleigh Distribution.
估计一下在秤量，使用滴定管和确定终定位置的不确定度。用这些值计算误差传播而且跟所观测值比较一下。
Estimate what you think the uncertainty is in weighing, using the buret, and in endpoint location. Do error propagation from these values and compare with the observed precision.
并对系统最大误差位置进行误差参数灵敏度分析。用蒙特卡洛法进行精度综合。
The sensitivities of error parameters were analyzed at the maximum error position, and accuracy synthesis was conducted by using Monte Carlo method.
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