“crystal system”的概念、定义、习题解题方法及翻译-物理辞典

单词	crystal system
释义	crystal system A method of classifying crystalline substances on the basis of their unit cell. There are seven crystal systems. If the cell is a parallelopiped with sides a, b, and c and if α is the angle between b and c, ß the angle between a and c, and γ the angle between a and b, the systems are: (1) cubica=b=c and α=ß=γ=90° (2) tetragonala=b≠c and α=ß=γ=90° (3) rhombic (or orthorhombic) a≠b≠c and α=ß=γ=90° (4) hexagonala=b≠c and α=ß=γ=90° (5) trigonala=b≠c and α=ß=γ≠90° (6) monoclinica≠b≠c and α=γ=90°≠ß (7) triclinica=b=c and α≠ß≠γ
随便看	quark confinement quarter-wave plate quartile quartz quartz clock quasars quasicrystal quasiparticle quasiperiodicity quenching r.a.m. racemic mixture rad radar radial velocity radian radiance radiant energy radiant exitance radiant flux radiant intensity radiation radiation belts radiation damage radiation pressure

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。