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[转]常用英文数学式/符号的读法
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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 mill Decimals 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 percent Mathematic 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 won`t go Multiplication 乘法 1×0=0 One multiplied by nought equals nought. 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. Division 除法 9÷3=3 Nine divided by three maks (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 quctient is 198, and 13 remainder. Time 时间 (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.['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 o'c =at five o'clock 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 1950's 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 π 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 ℃ Celsius system 摄氏度 ≌ is equal to or approximately equal to 等于或约等于号 ＠ at 单价 mm…millimeter cm…centimeter m…meter l…liter ml…milliliter g…gram mg…milligram ng…nanogram μg…microgram cc…cubic centimeter |
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