By means of the experiential value of logarithmic fatigue life standard error, the safety fatigue life of welded joints was obtained at different safety probability with certain confidence level.
利用对数疲劳寿命标准差的经验取值，得出了焊接接头对应一定置信度下不同安全概率的低温疲劳寿命表达式。
It is resolved that design condition efficiency for low specific speed centrifugal pump is not the highest in terms of experiential statistical area ration value.
解决泵行业一直依据经验统计值确定面积比而不能使低比转速离心泵在设计点效率最高这一问题。
Structural risk minimization induce principle is used to control the bound on the value of achieved risk by controlling experiential risk and belief bound at the same time.
结构风险最小化归纳原则通过控制经验风险和置信范围来控制实际风险的界。
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