各种符号英语读法.doc

: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/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&bcong;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&nlt;isnotlessthan不小于号&ngt;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…∞infinity无限大号∝variesas与…成比例√(square)root平方根&becaus;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#pound…号∏(点乘就是centereddot)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)偏微分符号(不好意思,打不出来)有人把它读partial或者d但这样读都不正规,最正规读法为round因为这个符号是法国人发明的,一开始就叫round倒三角符号(不好意思,打不出来2)读作nabla或者del读nabla的居多,后者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梯度:grandient符号为grad散度:divergence符号为div此时可直接读作grandient(divergence)of...二、一些函数关系的读法A与B的乘积the___productofAandB(___中填乘积的性质,例如外积就填outer,内积就填inner)A乘以BAtimesBorAismultipliedbyBA/BAoverBB分之A的最普通读法f(x)fofx函数f(x)exp(n)etopowersofne的n次幂三、(1)eenthXX20twenty20ththetwentiethXXI21twenty-one21stthetwenty-firstXXV25twenty-five25ththetwenty-y-y-ninthC100onehundred100ththehundredthCII102ahundred102ndthe(one)hundredandtwoandsecond246twohundredandforty-six751sevenhundredandfifty-one(2)1000以上的数词1,000=onethousand一千10,000=tenthousand一万100,000=onehundredthousand十万1,000,000=onemillion一百万10,000,000=tenmillion一千万100,000,000=onehundredmillion一亿(3)十亿以上的大数,英美有