各种符号、数字英语读法VIP免费

常用的数学符号英文读法一、一般符号对应的英文单词．period句号，comma逗号：colon冒号；semicolon分号！exclamation惊叹号？questionmark问号─hyphen连字符’apostrophe省略号；所有格符号—dash破折号‘’singlequotationmarks单引号“”doublequotationmarks双引号()parentheses圆括号[]squarebrackets方括号《》Frenchquotes法文引号；书名号...ellipsis省略号¨tandemcolon双点号"ditto同上‖parallel平行双线号／virgule斜线号＆ampersand=and～swungdash代字号§section;division分节号→arrow箭号；参见号＋plus加号；正号－minus减号；负号±plusorminus正负号×ismultipliedbyorcross叉乘÷isdividedby除号＝isequalto等于号≠isnotequalto不等于号≡isequivalentto全等于号≌isequaltoorapproximatelyequalto等于或约等于号≈isapproximatelyequalto约等于号＜islessthan小于号＞ismorethan（isgreaterthan在数学中更常用）大于号≮isnotlessthan不小于号≯isnotmorethan不大于号≤islessthanorequalto小于或等于号≥ismorethanorequalto大于或等于号％percent百分之…‰permill千分之…1∞infinity无限大号∝variesas与…成比例√(square)root平方根 since;because因为∴hence所以∷equals,as(proportion)等于，成比例∠angle角⌒semicircle半圆⊙circle圆○circumference圆周πpi圆周率△triangle三角形⊥perpendicularto垂直于；另外normalto，rightto也都有垂直的意思。∪unionof并，合集∩intersectionof交，通集∫theintegralof…的积分∑(sigma)summationof总和°degree度′minute分″second秒＃number…号℃Celsiussystem摄氏度＠at单价∏pi.dot(点乘就是centereddot)∂：偏微分符号,∂读作round法国人发明的.偏导数英文翻译为partialderivative,因此有时读为partial.还有一种读法,念成round∂：是希腊字母δ的古典写法,数学里只用作表示偏导数的记号,在表示偏导数的时候,一般不念字母名称,中国人大多念作“偏”,(例如z对x的偏导数,念作“偏z偏x”.)(简单的把∂y/∂x读成偏y比偏x)倒三角符号▽读“Nabla”,奈不拉,也可以读作“Del”，读nabla的居多，Del在某些英文书里会见到。nabla符号本身具有不同的功能，当它按不同的乘法规则作用于函数时会分别得到f’fprimef撇A上面一个横杠：AbarA上面一个星星*：AasteriskA上面一个波浪线～：AtildeA的厄米共轭（注意不是加号，那个竖比横长）：Adagger（dagger：短剑，匕首）梯度：grandient符号为grad，散度：divergence符号为div。此时可直接读作grandient（divergence）of...21.Logic逻辑∃thereexist∀forallp⇒qpimpliesq/ifp,thenqp⇔qpifandonlyifq/pisequivalenttoq/pandqareequivalent2.Setsx∈AxbelongstoA/xisanelement(oramember)ofAx∉AxdoesnotbelongtoA/xisnotanelement(oramember)ofAA⊂BAiscontainedinB/AisasubsetofBA⊃BAcontainsB/BisasubsetofAA∩BAcapB/AmeetB/AintersectionBA∪BAcupB/AjoinB/AunionBA\BAminusB/thediferencebetweenAandBA×BAcrossB/thecartesianproductofAandB3.Realnumbersx+1xplusonex-1xminusonex±1xplusorminusonexyxy/xmultipliedbyy(x-y)(x+y)xminusy,xplusyxyxovery=theequalssignx=5xequals5/xisequalto5x≠5x(is)notequalto5x≡yxisequivalentto(oridenticalwith)yx≡yxisnotequivalentto(oridenticalwith)yx>yxisgreaterthanyx≥yxisgreaterthanorequaltoyx