背景介绍:(1) Shear band 【剪切带】 is well known in the study of plastic deformation of materials, such as metallic glasses and rocks. Analogous to dislocations in crystalline metals, the initiation, propagation and interaction of shear bands in metallic glasses and rocks are responsible for the plastic deformation;
(2) SHEAR Band【SHEAR乐队】, on the other hand, is well known as a group of popular singers [http://shearofficial.com/band_alexa.php].
故事:G先生是某世界名牌大学的材料学教授,从事金属玻璃的研究、教学几十年。虽然已经年届六旬,仍然负责给研究生讲解材料学方面的一些课程。可是,让他头疼的是,这届有个学生总是翘课,作业、考试成绩一塌糊涂。G教授人很nice,想着如果这个学生毕不了业肯定会影响前程的。于是,抽时间单独面试了这个学生,想给个机会让他及格。G教授记得几天前请Y教授来做过一个报告,讲了很多金属玻璃变形方面的工作,涉及到了剪切带(shear band)。当时这个学生也去听报告了,似乎还很专注。于是G教授就问这个学生,What do you know about shear band? (你来谈谈剪切带的特征吧)。