The extraordinary light total reflection angle formula of positive uniaxial crystal for the op- tical axis in incidence plane is deduced by using Huygens principle:i=arcsin 1/n ((n_e~2-n_o~2)sin~2α-n_o~2)~(1/2).
用惠更斯作图法推导光轴在入射面内的正单轴晶体e光全反射角公式：i=arcsin(1/n)((n_e~2-n_o~2)sin~2α+n_o~2)~(1/2),它与光轴在入射面内的负单轴晶体e光全反射角公式形式完全相同；所以光轴在入射面内的单轴晶体e光全反射角公式为i= arcsin(1/n)((n_e~2-n_o~2)cos~2α+n_e~2)~(1/2)=arcsin(1/n)(n_e~2-n_o~2)sin~2α+n_o~2)~(1/2)(简称“何波公式”)。
Analysis of the negative refraction phenomenon in the common uniaxial crystals by using the Huygens construction;
用惠更斯作图法分析单轴晶体中的负折射现象
Introduction of Huygens Achievements in Qing Dynasty;
惠更斯的科学成就在中国清代的传播
Huygens just took advantage of analogy to establish optics wave doctrine.
惠更斯充分利用了类比法的创造性作用提出了光的波动学说 ,但惠更斯在将声与光进行类比时有其成功的一面 ,同时也具有其失误的一面 。
The Analysis of Huygens-diagraph in Searching for the Direction of Light Transmission in Crystal;
惠更斯作图求光在晶体中传播方向的解析法探讨
Huygens-Fresnel principle
惠更斯－菲涅耳原理
In fact, we shall merely overlook it completely when applying Huygen's construction.
实际上，在应用惠更斯做图法的时候我们将完全不管它。
As an initial approach to the problem, Let's reconsider Huygens'principle.
作为探索这个问题的第一步，让我们重新考察惠更斯原理。
Charley threw up his job to take up more respectable, more sensible employment
查利放弃他的工作,去从事更体面、更实惠的工作。
The discussion about the principle of Huygens-Fresnel and Kirchhoff s diffraction formula;
惠更斯-菲涅耳原理和基尔霍夫衍射公式的讨论
On Strengthening Regional cooperation between Huizhou city libraries;
加强惠州城市图书馆区域协作之设想
We take the reciprocal benefit,& counter-honest principle, and supply you with even more pref- erential policy.
我们将秉承互惠诚信的原则，为您提供更为优惠的合作条件。
You must be used to getting assists. You played alongside Batistuta for six years.
你似乎更习惯助攻，在佛罗伦萨你和巴蒂斯图塔合作了六年。
The Huygens ocular, which dates back over 250 years is still in wide use today.
二百五十多年前的惠更斯目镜今天还在广泛使用。
Fully fueled, Cassini-Huygens weighed about 5,500 kilograms and stood 6.8 meters tall.
装满燃料的卡西尼?惠更斯号重达5500公斤，高约6.8公尺。
"Wheeler," said Hurstwood.
“惠勒，"赫斯渥说。
recitations from Dickens
狄更斯作品选段的背诵
the complete published works Dickens.
狄更斯的全部出版作品。
readings from Dickens
狄更斯作品的朗诵片段.
a form of whist in which players avoid winning tricks containing hearts of the queen of spades.
惠斯特牌的一种形式，玩家力图避免手中有红桃皇后。
Second picture: Whistler follows Michael through the cellar to the escape tunnel.
第二张图：惠斯勒随着迈克尔通过水窖，进入下水道开逃。
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。