Now Weyl was a mathematician.He was not a physicist at all.

由于外尔是一个数学家，他完全不是一个物理学家。

Now Weyl was a mathematician. He was not a physicist at all.

由于外尔是一个数学家，他完全不是一个物理学家。

Hermann Weyl In these days the angel of topology and the devil of abstract algebra fight for the soul of each individual matehmatical domain.

在这些日子里，拓扑这个天使和抽象代数这个魔鬼为各自占有每一块数学领域而斗争着。

Three dimensional (3D) topological Dirac/Weyl semimetals are currently a new frontier and focus topic in condensed matter physics and materials science.

三维拓扑狄拉克/外尔半金属是近期凝聚态物理和材料科学领域的一个新的研究热点，并得到了广泛的关注。

Weyl just published a blunt statement that the holes must have the same mass as the electrons and did not make any comments on the physical implications of this assertion.

外尔只是发表了一篇粗糙的陈述，声明空穴必须具有与电子相同的质量，而没有对这份断言作出任何具有物理含义的评论。

Science of Synthesis: Houben-Weyl Methods of Molecular Transformations: Category 6: Compounds with All-Carbon Functions , Volume 43: Polyynes, Arynes, Enynes, and Alkynes.

合成科学，第6类： 具全碳功能的化合物， 第43卷：聚块烃、芳块、烯块与块（高价丛书）

Their low energy electronic excitations are located around a few Dirac/Weyl nodes in momentum space and resemble the relativistic Dirac/Weyl fermions in high energy physics.

这些材料的低能激发集中在动量空间的一些狄拉克/外尔点附近， 与相对论高能物理中的狄拉克/外尔费米子非常相似。