拉伸试验机r值异常的具体表现及原因分析

孙志鹏，徐雁，宋祖峰

Concrete manifestation and cause analysis of the abnormal r-value of the tensile testing machine

SUN Zhi-peng， XU Yan， SONG Zu-feng

物理测试 . 2020, (1): 24 . DOI: 10.13228/j.boyuan.issn1001-0777.20190041