b)Triaxial material tests have been made on epoxy cast thin-walled cylinderical samples when they are in plane stress state where there are six principal stress ratios (1=0, 1=0.5, 1:0.96, 1: -1, 1: 0.38, 1:-0.155) .是什么意思_b)Triaxial material tests have been made on epoxy cast thin-walled cylinderical samples when they are in plane stress state where there are six principal stress ratios (1=0, 1=0.5, 1:0.96, 1: -1, 1: 0.38, 1:-0.155) .在线翻译_英语_读音_用法_例句