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数学式和数学用语的英文读法

一、Number 数字

106: one million

109: one billion (or one thousand million) 1012: one trillion (or one million million)

1015: one quadrillion(or one thousand million million) 1018: one quintillion (or one million million million)

123,456,789: one hundred and twenty three million, four hundred and fifty-six thousand,

seven hundred and eighty-nine 12,345,678,900,000:twelve trillion, three hundred and forty five billion, six hundred and

seventy-eight million, nine hundred thousand 18:

minus eighteen

二、Fractions 分数

通常将分子读为基数,将分母读为序数。 1/2: a (or one) half 1/3: a (or one) third

1/4: a quarter or one fourth 1/5: a (or one) fifth

2/3: two thirds, two over three, or two by three 9/10: nine tenths, nine over ten, or nine by ten 53/4: five and three quarters

15/64: fifteen over (or by) sixty-four 15%: fifteen per cent 4‰: four per mill (or mil)

三、Decimals 小数

0.4:

zero (or naught) point four

.01: point (or decimal) naught (or oh) one 12.34: twelve point three four

567.809: five hundred and sixty-seven point eight naught (or oh) nine 30.45: thirty point four five,

0.3333333…..: point three repeating (or recurring) 0.3%: point (or decimal) three percent

四、Mathematic Forms 数学式

(4-1) Addition 加法

1+2=3: One and two are three.

2+3=5: Two plus three equals five.

4+0=4: Four and naught is equal to four.

45+70+152=267: 45, 70 and 152 added are (or make) 267 the sum (or total) is 267. (4-2) Subtraction 减法

9-4=5: Nine minus four equals (or is equal to) five. 15-7=8: Seven from fifteen leaves eight.

23,654-8,175=15,479: 8,175 (take or subtracted) from 23,654 leaves 15,479. The difference (or The remainder) is 15,479. (4-3) Multiplication 乘法 1×0=0: One multiplied by naught equals naught. 1×1=1: Once one is one. 2×1=2: Twice one is two. 3×5=15: Three times five is fifteen 6×0=0: Multiply six by nothing, and the result is nothing. (4-4) Division 除法 9÷3=3: Nine divided by three makes (or is equal to) three.

20÷5=4: Five into twenty goes four times.

4567÷23=198 余 13: 23 into 4567 goes 198 times, and 13 remainder. The quotient is 198, and 13 remainder.

五、Power 幂次方

b n 当中, b 被称为底数 (base),n 被称为指数 (power or exponent) b n : the n th power of b 或 b to the n th power. a 107: a times the seventh power of ten. b 的平方: b square or b squared b 的立方: b cube or b cubed b 的4次方: b to the fourth b 的-1次方: b to the minus one

六、Time 时间

(6-1) Hours 钟点

2h.5'8" : two hours five minutes eight seconds 2小时5分8秒 6.18: six eighteen 6时18分

8.30 a.m.: eight thirty a.m. 上午8时30分

the 6.05 p.m. train: the six (naught) five p.m. train 下午6时零5分列车 又二十四小时混合制的写法和读法如下: 0900: 0 nine hundred (上午)9时 0910: 0 nine ten (上午)9时10分

1300: thirteen hundred 13时(下午1时)

1525: fifteen twenty-five 15时25分(下午3时25分) 2000: twenty hundred 20时(下午8时) at 5 o'clock: at five o'clock 五点钟

(6-2) Date 日期

Oct.1: October first 10月1日

Oct.1st : October the first 10月1日

1st Oct. 1949: the first of October, nineteen forty-nine 1949年10月1日 3/5: [英] May (the) third 5月3日;[美]March fifth 3月5日 684 B.C.: Six eighty-four B.C. 公元前684年 106 A.D: one oh six A.D. 公元106年

1960: nineteen sixty; nineteen hundred and sixty 19-: nineteen something

1950's : nineteen fifties 二十世纪五十年代 60's : sixties 本世纪60年代

1770年代初期: in the early 1770's 20世纪末: in the late 20th century 11世纪中叶: in the mid 11th century

七、其它

log(x ) : the logarithm of x

log b (x ) : the logarithm of x to the base b 5 : 3: five to three

A 队领先 2 分: Team A is leading (or ahead) by two.

B 队落后 2 分: Team B is trailing (or down) by two. 45 度角: forty-five degree angle

二元一次方程式: linear (or simple) equation with two unknowns 一元二次方程式: quadratic equation with one unknown V ol.I : V olume one (or the first volume) (chapter, page, line 的读法类似)

Matt.7:12: Matthew, Chapter Seven, Verse Twelve 《马可福音》第七章第12节 Hamlet III 1:56: Hamlet Act Three, Scene One, Line fifty-six

《哈姆雷特》第3幕第一场第56行

时频分析第123页第四行: Time-Frequency Analysis, page 123, line 4 Henry V: Henry the Fifth 亨利五世

$4.25: four dollars twenty-five cents 四元二十五分 (大小单位之间不必加 and) 15 ft. 5 in: fifteen foot five (inches) 十五英尺五英寸 20 gal. 5 qt.: Twenty gallons five quarts 二十加仑五夸脱 10×8 feet: ten by eight feet 十英尺长,八英尺宽 5"×4×2 1/2: five inches by four by two and a half 长五英寸,宽四英寸,高二英寸半

八、符号的英文读法

(8-1) Punctuation Marks 标点符号

(8-2) Mathematical Symbols (I) 数学符号 (一)

(8-3) Mathematical Symbols (II) 数学符号 (二)

九、Common Words in Mathematics 数学常用字汇

(9-1) Science 科学

(9-2) Numbers 数

(9-3) Operations (I) 运算(一)

(9-4) Operations (II) 运算(二)

(9-5) Algebras and Functions 代数与函数

(9-6) Properties 性质

(9-7) Sets and Logic 集合与逻辑

(9-8) Geometry (I) 几何 (一)

(9-9) Geometry (II) 几何 (二)

(9-10) Geometry (III): Lines and Coordinates 几何 (三) : 线与坐标

(9-11) Probability and Statics 机率与统计

(9-12) Other Important Vocabularies in Mathematics 其它数学上的重要字汇

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