The concept of Fresnel number is also discussed.
并对菲涅耳数这一物理概念进行了论述。
Fresnel lens on the top. Thickness and quality of the glass are impressive.
塔顶的菲涅尔透镜。透镜的厚度和质量令人印象深刻。
A new kind of interferometer-Fresnel zone plate interferometer-is described.
本文提出一种具有实用意义的新型干涉仪——菲涅耳波带板干涉仪。
The difficulty was resolved by Fresnel with his addition of the concept of interference.
菲涅耳通过加进来干涉概念，解决了这个困难。
The difficulty was resolved by Fresnel with his addition of the concept of interference.
菲涅耳通过加进来干涉概念，解决了这个困难。
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