數(shù)圖形等文表達(dá)ppt課件

1、第三篇數(shù)、符號(hào)、公式、圖形的第三篇數(shù)、符號(hào)、公式、圖形的英文表達(dá)簡(jiǎn)介英文表達(dá)簡(jiǎn)介第二十章數(shù)的表達(dá)第二十章數(shù)的表達(dá) 數(shù)的系統(tǒng)：自然數(shù)數(shù)的系統(tǒng)：自然數(shù)Natural Numbers、整數(shù)、整數(shù)Integers、有理數(shù)、有理數(shù)Rational Numbers、無(wú)理數(shù)、無(wú)理數(shù)Irrational Numbers、實(shí)數(shù)、實(shí)數(shù)Real Numbers、虛數(shù)、虛數(shù)Pure Imaginary Numbers、復(fù)數(shù)、復(fù)數(shù)Complex Numbers 一、整數(shù)一、整數(shù) 35,896,732,546,285 讀作：讀作：thirty-five trillion eight hundred and ninety-

2、six billion seven hundred and thirty-two million five hundred and forty-six thousand two hundred and eighty-five 10億以上的數(shù)，英式英語(yǔ)和美式英語(yǔ)表達(dá)不同。 billion：1109美式； 11012英式 trillion：11012美式； 11018英式 quadrillion：11015美式； 11024英式 quintillion： 11018 美式； 11030 英式 sextillion：11021美式； 11036英式 septillion：11024 美式； 1104

3、2 英式 octillion：11027 美式； 11048 英式 nonillion：11030美式； 11054 英式 decillion： 11033美式； 11060 英式 留意在上述這樣的數(shù)詞中，hundred，thousand，million，billion，trillion等詞普通是單數(shù)方式。 例如：two hundred，three million，five trillion，etc. 第403號(hào)房間Room 403 讀作：room four oh one 號(hào)碼elephone Number:讀作：zero three s

4、even one seven four two six three two nine 97次列車Train Number 97 讀作：train ninety-seven或the ninety-seventh train 美國(guó)西北航空公司3644航班Flight NW 3644 讀作：flight NW three six four four 公元前753年inthe 753 BC 讀作：inthe year seven hundred and fifty-three BC 20世紀(jì)70年代1970s或1970s 讀作：innineteen seventies 1945年8月in August

5、, 1945 讀作：in August nineteen forty-five 2019年7月1日on July 1(st), 2019或on 1(st ) July, 2019 讀作：on July the first ninety-seven或on the first of July nineteen ninety-seven 上午九點(diǎn)非常09:10 a.m. 讀作：ohnine ten a.m. 二、小數(shù)和分?jǐn)?shù) 329,671,239.953579 讀作：three hundred and twenty-nine million six hundred and seventy-one t

6、housand two hundred and thirty-nine point nine five three five seven nine 2,050.0357 讀作：two thousand and fifty point zero three five seven .01 讀作：one hundredthpoint zero one 讀作： zero point seven repetent seven 讀作：zero point three seven repetend three, seven 讀作： zero point three seven recurring .0000

7、1 讀作：one millionthpoint zero zero zero zero one/point four zero one 9.621 讀作：nine point six two one 讀作：zero point three fives equals zero point five recurring 73 . 037. 073 . 05 . 0555. 0 讀作： zero point two four, seven three recurring/zero point two four, seven three repetend seven three 讀作：Zero poi

8、nt four zeros one equals one over one hundred thousand equals one over ten to the fifth power equals ten to the minus fifth power 0.0000053= 5.30.000001= 5.310 6 讀作：Minus zero point five zeros five three equals minus five point three times zero point five zeros one equals minus five point three time

9、s ten to the minus sixth power 5510101100000100001. 0 讀作：five and five-eighthsfive and five over eight或five and five divided by eight8553724. 0 讀作：Three divided by seven equals zero point four two eight five seven one four two eight five seven one, etc. equals zero point four two eight five seven on

10、e repetend four two eight five seven one. 讀作：Zero point zero zero three percent equals zero point zero zero three over one hundred equals zero point four zeros three.00003. 0100003. 0%003. 0 0.25= 0.25 1000 = 250 讀作：Zero point two five equals zero point two five times thousand per mille equals two h

11、undred and fifty per mille.428571. 0714285714285. 073第二十一章符號(hào)的表達(dá)第二十一章符號(hào)的表達(dá) 一、普通數(shù)學(xué)符號(hào) 2 + 3 讀作：two plus three 10 b 讀作：ten minus b x= 3 讀作：x equals minus or plus five x y 讀作：x times y或x multiplied by y 9 4 讀作：nine divided by four 1 : 2 讀作：the ratio of one to two a : b 讀作：a is to b 0.3% 讀作：zero point thr

12、ee percent 3.8 讀作：three point eight per mille 讀作：Open parenthesis six plus five and three-fourths minus four point six six multiplied by three close parenthesis divided by three and one seventh713)366. 44356( a2b2 (ab)(ab) 讀作：a squared minus b squared equals the quantity a plus b times the quantity

13、a minus b.或a squared minus b squared equals open parenthesis a plus b close parenthesis times open parenthesis a minus b close parenthesis. 讀作：The quantity a plus b to the nth power equals a to the nth power plus n times the quantity a to the n minus one power times b plus n times the quantity n min

14、us one divided by two times the quantity a to the n minus two power times b squared down to plus b to the nth power.nnnnnbbannbnaaba2212) 1()( 讀作：k equals eighty-one times two-thirds to the eight power.8)32(81k 讀作：x to the third power plus one overdivided by the quantity x squared plus one to the tw

15、o-thirds power.3223)1(1xx 讀作：The limit as n approaches infinity of the quantity one over n squared times the sum of n positive integers.或The limit as n approaches infinity of the quantity one over n squared times one plus two plus up to plus n.)21(1lim2nnn 讀作：Fifteen times x squared minus open brack

16、et minus four times x squared plus six open parenthesis x minus x squared close parenthesis minus three times x close bracket.3)(6415222xxxxx 讀作：One-half open brace, a open bracket b plus open parenthesis c minus d close parenthesis close bracket close brace.)(21dcba (ab)(ab) a2b2 讀作：The product of

17、the sum and difference of two terms a and b equals the difference of their squares. 讀作：c is identical with fivec is equivalent to fivec is identical to five.5c 讀作：c plus d times a is not equal to zero.0adc 讀作：G equals m times g, and G is in direct proportion to m.mGmgG，這這里里 讀作：t equals three divide

18、by seven is approximately equal to zero point four two nine.429. 073t 讀作：Two over four is corresponding to ninety degrees.9042 a 0 讀作：Ell en x equals the logarithm to the base e of x, for x is greater than zero. f (x) = 1 + ln (x-2) 讀作：The function f of x equals one plus ell en the quantity x minus

19、two. 六、三角函數(shù)、反三角函數(shù)、雙曲函數(shù)和反雙曲函數(shù) sin3 3sin 4sin3 讀作：The sine of three theta is equivalent to three times the sine of theta minus four times the quantity sine theta cubed. 讀作：The cosine of t equals minus the square root of one minus the quantity sine t squared.2cos1sintt 讀作：The tangent of pi over four eq

20、uals 1. 讀作：The cotangent of t equals x over y equals the cosine of t over the sine of t. 讀作：The secant of pi over four equals the square root of two. csc2 ctg2 = 1 讀作：The cosecant alpha squared minus the cotangent alpha squared equals one. 讀作：The arcsinethe inverse sine of minus one-half equals minu

21、s the quantity pi over six.14tan ttyxtsincotcot24sec 6)21arcsin( 讀作：One-half y equals the arctangent of the square root of the quantity one minus x over one plus x. 讀作：The arcsecant of x plus the arccosecant of x equals pi over two. 讀作：The hyperbolic sine of x equals the quantity e to the xth power

22、minus e to the minus xth power over two. 讀作：The hyperbolic tangent of x equals the quantity e to the xth power minus e to the minus xth power over e to the xth power plus e to the minus xth power.xxy11tan2112cscarcsecarc xx2shxxeexxxxxeeeexth 讀作：The arc-hyperbolic sine of x equals ell en the quantity x plus or minus the square root of x squared plus one. 七、集合 K = 1, 2, 3, 4, 5 讀作：K equals the set whose membe