目 次 1 适用范围....................................................................................... .................................... . １ 2 规范性引用文件................................................................................................................ .... １ 3术语和定义............................................................................................................................... １ 4 符号和说明.............................................................................................................................. 2 5原理........................................................................................................................ ............. .... 8 6 试样......................................................................................................................................... 18 6.1形状及尺寸..................................................................................................... .................... 18 6.2试样种类............................................................................................... ......... ...................... 18 6.3试样加工..................................................................................................... .......................... 19 7 原始横截面积的测定.............................................................................................................. 21 8 原始标距的标记...................................................................................................................... 21 9 试验设备的准确度.................................................................................................................. 22 9.1试验机...................................................................................................................................22 9.2延伸计................................................................................................................
