Fresnel biprism

例句：

1. 1. The Fresnel biprism is used to analyze the polarization of light.
   菲涅尔双棱镜用于分析光的偏振。
2. 2. In astronomy, the Fresnel biprism is used to observe the spectrum of stars.
   在天文学中，菲涅尔双棱镜被用来观察恒星的光谱。
3. 3.The Fresnel biprism is a critical component in the design of optical instruments.
   菲涅尔双棱镜是光学仪器设计中的关键部件。