常用英文数学式.doc

常用英文数学式/符号的读法常用英文数学式/符号的读法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 fouth 1/5 = a (or one) fifth 2/3 = two thirds 9/10 = nine tenths 53/4 = five and three quarters 15/64= fifteen over (or by) sixty-four 15% = fifteen per cent 4 = four per millDecimals 小数 0.4 = zero (or nought) point four .01 = point (or decimal) nought one 12.34 = twelve point three four 567.809 = five hundred and sixty-seven point eight nought nine 30.45 = thirty point four five, five recurring 0.3% = decimal three percentMathematic Forms 数学式(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 nought is equal to four. 45+70+152=267 45,70 and 152 added are (or make) 267 the sum (or total) is 267. (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. Nine from five wont goMultiplication 乘法 10=0 One multiplied by nought equals nought. 11=1 Once one is one. 21=2 Twice one is two. 35=15 Three times five is fifteen 60=0 Multiply six by nothing, and the result is nothing.Division 除法 93=3 Nine divided by three maks (or is equal to) three. 205=4 Five into twenty goes four times. 456723=198余13 23 into 4567 goes 198 times, and 13 remainder. The quctient is 198, and 13 remainder.Time 时间 (1)Hours 钟点 2h.58 = 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.ei em 上午8时30分 the 6.05 p.m.train = the six (nought) five p.m.pi:em 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 hunderd (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 oc =at five oclock 五点钟 (2)Date 日期 Oct.1 =October first 10月1日 Oct.1st = October the first 10月1日 Ist Oct. 1949 = teh 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 (3)Year 年份 684 B.C. =Six eighty-four B.C. bi:si: 公元前684年 1960 = nineteen sixty; nineteen hundred and sixty 19- nineteen something 1950s nineteen fifties 二十世纪五十年代符号的英文读法 period 句号 is approximately equal to 约等于号 , comma 逗号 is less than 小于号 ： colon 冒号 is more than 大于号 ； semicolon 分号 B is not less than 不小于号 ！ exclamation 惊叹号 is not more than 不大于号 ？ question mark 问号 is less than or equal to 小于或等于号 is more than or equal to 大于或等于号 apostrophe 省略号 ；所有格符号 per cent 百分之 - dash 破折号 per mill 千分之 single quotation marks 单引号 infinity 无限大号 double quotation marks 双引号 varies as 与成比例 ( ) parentheses 圆括号 (square) root 平方根 square brackets 方括号 since; because 因为 French quotes 法文引号;书名号 hence 所以 . ellipsis 省略号 equals, as (proportion) 等于，成比例 tandem colon 双点号 angle 角 ditto 双点号 semicircle 半圆 parallel 双线号 circle 圆 virgule 斜线号 circumference 圆周 ampersand = and pi 圆周率 swung dash 代字号 triangle 三角形 section; division 分节号 perpendicular to 垂直于 arrow 箭号；参见号 union of 并，合集 plus 加号；正号 intersection of 交，通集 minus 减号；负号 the integral of 的积分 plus or minus 正负号( sigma) summation of 总和 is multiplied by 乘号 degree 度 is divided by 除号 minute 分 is equal to 等于号 second 秒 is not equal to 不等于号 number 号 is equivalent to 全等于号 Cel