众所周知，在计算正态分布的概率积分值时，有三种表可供查阅。
It is well known that in evaluating the value of certain probability integral with normal distribution, there are three kinds of table usually employed.
文中提出采用辛卜生数值积分较好地处理了正态分布数值表，从而将优化设计与可靠性设计有机地结合起来。
The table of standard normal distribution was handled correctly by use of Raphson numerical integral, by this way, the optimum design was connected with reliability design organically.
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