《研究生学术英语读写教程》Unit 4 Text A 中的数学概念 芋圆公式 当人家翻山越岭渴望到达山顶,我还在原地踏步而已。 31 人赞同了该文章 数学概念 第1 自然段提到物理学家 Paul Dirac,他最为人熟知的成就为 Dirac 方程 (iγμ∂μ−m)Ψ(x,t)=0。Dirac 方程可以解出粒子的自旋,因而超越了 ...
数学的美,在于其强大的论证和沟通能力,其美在于其潜在的思维过程。数学之美不仅体现在公式的简洁与紧凑,还在于其将看似不相关的领域联系起来,揭示了自然界的秩序。保罗·戴里克 (Paul Dirac) 的狄拉克方程揭示了粒子的自旋,超越了薛定谔方程,展示了物理之美在于数学的完美表达。爱因斯坦的质能方程 E...
Inthelate17thcentury,theDutchscientistAntonievanLeeuwenhoekcreatedanewtypeofmicroscopelensandbroughtanentireworldoftinyorganismsintofocus.Lookingathisowndentalplaque,hewrote:"Ithenmostalwayssawwithgreatwonder,thatinthesaidmatterthereweremanyverylittlelivinganimalcules',veryprettilya-moving."Theselittlecreatureswere...
as wily as a fox 研究生英语课程unit9 Unit 9 Text A II. Language points 1. …many dressed in the brilliant matrimonial hues of their cultures. (Para. 1) …many wearing the wedding dresses whose colors are characteristic of their cultures. 2. Once a practice as provincial as it was ...