Coordinates of a normalprobabilitypaper are calculated with a approximate formula of normal distribution integral curve and drawn on screen.
采用正态分布积分曲线的近似公式计算概率格纸的坐标，并在屏幕绘图。
2
The reliability solution expressions of strength with normal distribution and stress with different ones are given in the paper by total probability methods.
运用全概率法，推导出强度为正态分布，应力为其它分布式可靠度全概率求解表达式。
3
The paper points out that the finish error of blades does not conform to normal distribution law, hence the error probability distribution function is derived for this specific process.