食品安全英语作文食品安全英语作文篇一:食品安全英语作文心算法Currently, many problems concerning the safety of food have popped up. As for me, I believe at least three factors account for this issue.First, I obrve that profits dr
词汇:mechanical property 机械(力学)性能 critical part and element 关键零部件 covalent bond 共价键 metalic bond crystal lattice 金属键晶格 electrostatic attraction 静电吸引plastic deformation 塑性变形 lf-strengthening 自强化 stress