晶体

• Today, quartz crystal clocks are generally used on the seismograph stations .
  目前，地震台站一般采用石英晶体钟。
• He held up the crystal and looked through it at the sun's reflections .
  他拿起了晶体，通过它来观察反射来的阳光。
• Real crystals exhibit a variety of departures from this idealized structure .
  真实晶体和这种理想的结构有种种出入。
• Atoms held within solid crystals at low temperature may be tightly glued .
  低温固态晶体内的原子可以被紧紧地束缚住。
• Crystals having this property are said to be doubly refracting, or birefringent .
  具有这种性质的晶体叫做双折射晶体。
• Crystals of this type, having only one optic axis, are called uniaxial crystals .
  这种只有一根光轴的晶体称为单轴晶体。
• Electron microscopy has revolutionized the study of crystal imperfections .
  电子显微学已经革新了对晶体不完整性的研究。
• Gross crystalline imperfections like twinning are apparent to the unaided eye .
  粗的晶体不完整性，如孪生体可用肉眼看出。
• The two pieces being cemented together with a thin film of canada balsam .
  再将这两块晶体用一层加拿大树胶薄膜粘合在一起。
• The alkali halides can be grown into large crystals of excellent transparency .
  碱金属卤化物能生成具有优良透明性的大晶体。