Chapter 1 Materials and Devices： An Introduction 第一章测验
1、 The basic unit of materials is_____, which can bond directly together to form materials, or convert into ions, or assemble into molecules.
答案: atom
2、 Crystalline structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material. We often use ____to illustrate the 3D structure, which is an array of ‘small boxes’ infinitely repeating in thr