网络释义专业释义英英释义
水晶:学名:石英(QUARTZ)化工式：SiO2（二氧化硅）晶系：三方晶系（TRIGONAL CRYSTAL SYSTEM）摩氏硬度：七比率：2.65双隐射率：1.553至1.544代表产地：巴西、美国、马达加斯加等水晶是亿万年前地球变化构成的结晶体、是矿层...
基于2330个网页-相关网页
Trigonal crystal system
- abstract: In crystallography, the trigonal crystal system is one of the seven crystal systems, and the rhombohedral lattice system is one of the seven lattice systems. They are often confused with each other: crystals in the rhombohedral lattice system are always in the trigonal crystal system, but some crystals such as quartz are in the trigonal crystal system but not in the rhombohedral lattice system.
以上来源于: WordNet
应用推荐
$firstVoiceSent
- 来自原声例句