fresnel
n.
菲（涅耳）（频率单位，百亿赫兹）;
菲涅耳;
例句:
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In many cases, the Simpler Huygens - Fresnel treatment will prove quite adequate for our purpose.
在许多情况下, 对于我们的目的来说,更简单的惠更斯―菲涅耳方法将是合适的.
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In 1818 Fresnel entered a competition sponsored by French Academy.
1818年菲涅耳参加了法国科学院主办的一次竞赛.
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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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For a start, Fresnel lenses are not nearly as efficient as first surface anodised aluminium sheet mirrors.
来自SA