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Equation Correct Approximation Shock Learn Atom Mathematicians Schrodinger

en Thus, for instance, it may come as a shock to mathematicians to learn that the Schrodinger equation for the hydrogen atom is not a literally correct description of this atom, but only an approximation to a somewhat more correct equation taking account of spin, magnetic dipole, and relativistic effects; and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field-theoretical equations.
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意群训练: Thus, for instance , it may come as a shock to mathematicians to learn that the Schrodinger equation for the hydrogen atom is not a literally correct description of this atom , but only an approximation to a somewhat more correct equation taking account of spin, magnetic dipole , and relativistic effects; and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field-theoretical equations .

mark

请思考:如果本句中大量的物理名词看不懂,对句子理解到什么程度就可以达到考试的要求

cn

标志: Thus, for instance , it may come as a shock /to mathematicians/ to learn that the Schrodinger equation for the hydrogen atomis not a literally correct description of this atom, but it i s only an approximation [to a somewhat more correct equation (taking account of spin, magnetic dipole, and relativistic effects)];and that this corrected equation is itself only an imperfect approximation ( to an infinite set of quantum field-theoretical equations).

explain

译文: 所以,我们可以举一个例子 ,/对于数学家们而言/,得知 以下的两种情况会令他们震惊不已:1. 氢原子的薛定鄂方程 并不 对这种原子的一个精确的、正确的描述, 只是[ 对于一个在某种程度上更为正确的方程式的]一个近似表述 ,(该更为正确的方程式 是描述自选、磁双偶极子以及相对论效应的)。2. 后面所说的 这个更为正确的方程式 自己也仅 (对于无限序列的量子场论方程式的)一个不完美的近似表述

解释: 读到此句时,数学家不见得震惊,晕倒的考生恐怕不在少数。不但句子结构复杂,而且罗列了大量的专有名词。对于不是理科的同学来讲,在阅读这篇文章的现场清楚地明白应该读到什么程度远比研究这些生僻的专有名词更重要。其实是否知道薛定鄂方程对读者来说并不见得重要,GRE考试的出题者也不见得知道它;关键是要读懂句子的主要意思:数学家不能理解不精确和近似值的伟大意义。不过在本书中,出现的句子均以阅读训练为目的,所以读者仍要把句子的结构读清楚。

主句中的主语it是一个形式主语,其具体的内容应该是从to learn开始一直到句子结束的长达八行的不定式,但是此不定式实在太长,如果放在句首则句子无法均衡。Learn后面带着两个以that引导的宾语从句,中间以分号和“and”分开,可以把分号以后的句子看成是and it may come as a shock to mathematicians to learn that的省略形式。

type 复杂修饰+插入语+省略
score 5
idx 017
category gre

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