摘要
做了２６ 个机械性能测试试件，对机械性能各参数的测试结果进行了分组，并对其作了累积频数和经验分布的分析．通过坐标纸描点与直方图的结果判断，拟做各参数为正态分布，经假设检验的Ｋ—Ｓ检验，确定原假设的正确性，从而得出结论，４２ＣｒＭｏ 钢机械性能概率统计分布为正态分布．
pieces of experimental samples are used to test mechanical properties of 42CrMo steel,the data of properties are divided into groups and their accumulated frequency numbers and experience distributon are analyzed.The data are assumed to have a normal distribution according to judgments from coordinates pointing and column diagrams of the data.Then the assumption is verified to be correct by K—S inspection.Thus it can be concluded that the probability statistical distribution of 42CrMo steel properties are normal.
出处
《佳木斯大学学报（自然科学版）》
CAS
1999年第1期30-33,共4页
Journal of Jiamusi University：Natural Science Edition
关键词
机械性能
概率统计分布
正态分布
钢
铬钢
CrMo steel
mechanical properties
probability statistical distribution
normal distribution
K—S inspection
