Preparation and properties of oxide sculptured birefringent thin films .

氧化物雕塑双折射薄膜的制备及性能分析。

Microtubules cannot be both the birefringent material and the elements that cause chromosome separation .

微管既不是双折射物质也不是引起染色体分开的成分。

Nematic liquid crystals ( nlc ) are optically uniaxial , birefringent materials . Besides electric and magnetic fields , the orientations could be altered from the equilibrium states by acoustic fields .

向列型液晶为单光轴晶体，具有双折射效应的光学性质，除了电场、磁场之外，还可以藉声场改变液晶分子排列的平衡状态。