# 1. 基本表达

## 1.1 四则运算

plus, minus, times/multiplied by, divided by

## 1.2 括号表达

(a+b)  bracket a plus b bracket

## 1.3 比较

equals/is equal to, greater than, less than, is approximately equal to, is not greater than, is not less than

## 1.4 分数与小数

(1)分数(fraction)

(2)小数(decimal fractions)

If the spreadsheet column is not wide enough to show all available decimal places, then the spreadsheet will round the number to the available column width.

Some items vary from month to month, like the phone bill for example, so track the amounts for a few months, take an average, and round up to the nearest \$10.

Lastly, it stores the cleaned up and rounded value in the database.

## 1.5 比例(ratio)

21:7 – 3:1  the ratio of twenty one to seven is equal to the ratio of three to one

a:b∷c:d    a is to b as c is to d

## 1.6 指数、方根和对数

(1)指数(exponentiation)

Exponentiation is a mathematical operation, written as bn, involving two numbers, the base b and the exponent (or power) n.

2次方为squared，3次方为cubed或to the third，往后依次为to the fourth, to the fifth, … 举例如下：

three squared plus four cubed/to the third
a to the fifth/the fifth power of a
to the minus tenth power of a

(2)方根(nth root)

the squared root of a
the cubed root of a
x to the minus two third plus the fifth root of a squared

(3)对数(logarithm)

logaN，a为底数(base)，N为真数(antilog/antilogarithm)，logaN读成:

the log/logarithm of N to the base a
log N to the base a

## 1.7 集合(set)

α→β(α==>β)：α implies β 或 if β, then α.
α <==> β：α is equivalent to β 或 α holds if and only if B holds

## 1.8 函数

f(x)意为the function f of x 或 the value of function f at x，读作f of x 或 the value of f at x

Y – f-1(x)为：y is the inverse of function f of x.
f: x→y读作：f maps x into y.
fog读作：f circle g

## 1.10 其他符号

x→y：x approaches the limit a 或 the implication ‘if x then a’

# 2. 论文写作

轩治峰.英语数学公式, 数字, 符号的表达法.中国科技翻译,2005, vol.18, no 3, p.11-13.
维基百科词条：Exponentiation
博文《常用数学英语词汇

http://wenku.baidu.com/view/efbb6fd084254b35eefd34b3.html

http://www.liuxue.com/e/20121123/50af68db40581.shtml

http://www.360doc.com/content/11/0214/00/260939_92838061.shtml

### 2 thoughts on “用英语表达数学”

• 2017年11月21日 星期二 at 02:28下午

1.2
“两个括号相乘，用”over”连接两括号，如a plus b into a minus b. ”

此处笔误，实为into。

整理不易，辛苦博主!

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