希腊字母意思.doc

希腊字母的读法序号大写小写英文注音国际音标中文注音意义1Ααalphaa:lf阿尔法角度;系数2Ββbetabet贝塔磁通系数;角度;系数3Γγgammaga:m伽马电导系数(小写)4Γδdeltadelt德尔塔变动;密度;屈光度5Δεepsilonep`silon伊普西龙对数之基数6Εδzetazat截塔系数;方位角;阻抗;相对粘度;原子序数7Ζεetaeit艾塔磁滞系数;效率(小写)8Θζthetζit西塔温度;相位角9Ηηiotaiot约塔微小,一点儿10Κθkappakap卡帕介质常数11∧ιlambdalambd兰布达波长(小写);体积12Μκmumju缪磁导系数;微(千分之一);放大因数(小写)13Νλnunju纽磁阻系数14Ξμxiksi克西15Ονomicronomik`ron奥密克戎16∏πpipai派圆周率=圆周÷直径=(小写)18∑ζsigma`sigma西格马总和(大写),表面密度;跨导(小写)19Τηtautau套时间常数20Υυupsilonjup`silon宇普西龙位移21Φθphifai佛爱磁通;角22Φχchiphai西23Χψpsipsai普西角速;介质电通量(静电力线);角24Ψωomegao`miga欧米伽欧姆(大写);角速(小写);?thereexist?forallp?qpimpliesq/ifp,thenqp?qpifandonlyifq/pisequivalenttoq/∈AxbelongstoA/xisanelement(oramember)ofAx?AxdoesnotbelongtoA/xisnotanelement(oramember)ofAA?BAiscontainedinB/AisasubsetofBA?BAcontainsB/BisasubsetofAA∩BAcapB/AmeetB/AintersectionBA∪BAcupB/AjoinB/AunionBA\BAminusB/thedifferencebetweenAandBA×BAcrossB/+1xplusonex-1xminusonex±1xplusorminusonexyxy/xmultipliedbyy(x-y)(x+y)xminusy,xplusyx/yxovery=theequalssignx=5xequals5/xisequalto5x≠5x(is)notequalto5x≡yxisequivalentto(oridenticalwith)yx≡yxisnotequivalentto(oridenticalwith)yx>yxisgreaterthanyx?yxisgreaterthanorequaltoyx<yxislessthanyx?yxislessthanorequaltoy0<x<1zeroislessthanxislessthan10?x?1zeroislessthanorequaltoxislessthanorequalto1|x|modx/modulusxx2xsquared/x(raised)tothepower2x3xcubedx4xtothefourth/xtothepowerfourxnxtothenth/xtothepowernx?nxtothe(power)minusnx(square)rootx/thesquarerootofxx3cuberoot(of)xx4fourthroot(of)xxnnthroot(of)x(x+y)2xplusyallsquared(x/y)2xoveryallsquaredn!nfactorialx^xhatxˉxbarx?xtildexixi/xsubscripti/xsuffixi/xsubi∑i=onai/‖x‖thenorm(ormodulus)ofxOA→OA/vectorOAOAˉOA/thelengthofthesegmentOAATAtranspose/thetransposeofAA?1Ainverse/(x)fx/fofx/thefunctionfofxf:S→TafunctionffromStoTx→yxmapstoy/xissent(ormapped)toyf'(x)fprimex/fdashx/the(first)derivativeoffwithrespecttoxf''(x)fd