liquid crystal imaging system[电子] 液晶成像系统
crystal violet system结晶紫
crystal l system晶系
crystal symmetry system晶系
crystal pickup system晶体拾音系统
iodide crystal violet system碘化钾结晶紫体系
piezoelectric quartz crystal resonance system压电石英晶体谐振法
N（名词） any of six, or sometimes seven, classifications of crystals depending on their symmetry. The classes are cubic, tetragonal, hexagonal, orthorhombic, monoclinic, and triclinic. Sometimes an additional system, trigonal, is distinguished, although this is usually included in the hexagonal system 晶系 [crystallog] → see also crystal class