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介绍金属材料弹性模量在理论、设计及工程实际中的重要性,从拉伸试验的测量不确定度考虑,对金属材料的弹性模量进行数值修约,从而获取较为合理的弹性模量的有效位数。
The importance of elastic modulus of metal material in theory, design and engineering practice was introduced. From the measurement uncertainty of tensile test, the elastic modulus of metal material was rounded to obtain a more reasonable elastic modulus Effective number of digits.