SymbolsinEnglish符号英文.docx

1、SymbolsinEnglish符号英文数学符号英文说法和发音大全！各路出国党不妨看过来！作者： Symbols +plus/pls/-minus/mans/plus or minus/pls : mans/xmultiplied by/mltplad ba/over; divided by/v/ /dvadd/divided/dvadd/=equals/:kwlz/approximately, similar/prksmtl/ /sml t/equivalent to; identical/kwvlnt t/ /adentkl t/ not equal to/nt ikwl t/ great

2、er than/gret n/ y x is greater than yx y x is less than yx yx is greater than or equal to yx yx is less than or equal to y0 x 1zero is less than x is less than 1; x is greater than zero and less than 10 x 1zero is less than or equal to x is less than or equal to 1; x is greater than or equal to zero

3、 and less than or equal to 1xx squaredxx cubedx4x to the fourth; x to the power fourxnx to the n; x to the nth; x to the power nx-nx to the minus n; x to the power of minus nroot x; square root x; the square root of xthe cube root of xthe fourth root of x the nth root of x(x + y)x plus y all squared

4、(x/y)x over y all squaredn!n factorial; factorial nx%x percentinfinityx yx varies as y; x is (directly) proportional to yx 1/yx varies as one over y; x is indirectly proportional to yx dotx double dotf(x) fxf of x; the function of xf(x)f dash x; the (first) derivative of with respect to xfxf double-

5、dash x; the second derivative of f with respect to xf(x)f triple-dash x; f treble-dash x; the third derivative of f with respect to xf(4)f four x; the fourth derivative of f with respect to xvthe partial derivative of vvdelta v by delta theta, the partial derivative of v with respect to vdelta two v

6、 by delta theta squared; the second partial derivative of v with respect to dvthe derivative of vdvdd v by d theta, the derivative of v with respect to thetadvdd 2 v by d theta squared, the second derivative of v with respect to theta, integral integral from zero to infinitysum the sum from i equals

7、 1 to nw.r.t.with respect tologeylog to the base e of y; log y to the base e; natural log (of) ythereforebecausegives, approachesx 0delta x approaches zerolimx0the limit as delta x approaches zero, the limit as delta x tends to zeroLtx0the limit as delta x approaches zero, the limit as delta x tends

8、 to zerom/secmetres per secondx Ax belongs to A; x is a member of A; x is an element of Ax Ax does not belong to A; x is not a member of A; x is not an element of AA BA is contained in B; A is a proper subset of BA BA is contained in B; A is a subset of BA BA intersection BA BA union Bcos xcos x; co

9、sine xsin xsine xtan xtangent x, tan xcosec xcosec xsinh xshine xcosh xcosh xtanh xthan x|x|mod x; modulus x18 eighteen degrees Centigrade70 seventy degrees FahrenheitGreek alphabet alpha/lf/beta/bi:t/gamma/gm/delta/delt/epsilon/epsiln/zeta/zit/eta/it/theta/it/iota/at/kappa/kp/lamda/lmd/mu/mju/nu/nj

10、u/xi/ksa/omicron/mkrn/pi/pa/rho/r/sigma/sgm/tau/t/upsilon/jpsln/phi/fa/chi/ka/psi/psa/omega/mg/ Roman alphabet Aa/e/Bb/bi/Cc/si/Dd/di/Ee/i/Ff/ef/Gg/i/Hh/e/Ii/a/Jj/e/Kk/ke/Ll/el/Mm/em/Nn/en/Oo/Pp/pi/Qq/kju/Rr/Ss/es/Tt/ti:/Uu/ju:/Vv/vi:/Ww/dblju/Xx/eks/Yy/wa/Zz/zed/ Fractions a half/ h:f/a quarter/ kw

11、t/three quarters/ri kwtz/a third/ :d/two thirds/tu: :dz/a fifth/ ff/two fifths/tu: ffs/three fifths/ri ffs/four fifths/f ffs/a sixth/ sks/five sixths/fav skss/an eighth/n et/three eighths/ri ets/five eighths/fav ets/seven eighths/sevn ets/ Decimal Fractions 0.1nought point one/n:t pnt wn/0.01nought

12、point oh one/n:t pnt wn/0.0001nought point oh oh oh one/ten pnt wn/1.1one point one/wn pnt wn/1.2one point two/wn pnt tu:/1.23one point two three/wn pnt tu: ri:/1.0123one point oh one two three/wn pnt wn tu: ri:/10.01ten point oh one/ten pnt wn/21.57twenty-one point five seven/twent wn pnt fav sevn/

13、2.6666666666.two point six recurring/tu: pnt sks rk:r/2.612361236123.two point six one two three recurring/tu: pnt sks wn tu: ri: rk:r/2.5 milliontwo point five million/tu: pnt fav mljn/ SI Units: Prefixes 10-24yoctoy/jkt/10-21zeptoz/zept/10-18attoa/at/10-15femtof/femt/10-12picop/pi:k/10-9nanon/nan/

14、10-6micro/makr/10-3millim/ml/10-2centic/sent/10-1decid/des/103kilok/kl/106megaM/meg/109gigaG/gg/1012teraT/ter/1015petaP/pet/1018exaE/eks/1021zettaZ/zet/1024yottaY/jt/1027xonaX/zn/1030wekaW/wek/1033vundaV/vnd/ Cardinal Numbers 1one/wn/2two/tu:/3three/ri:/4four/f/5five/fav/6six/sks/7seven/sevn/8eight/

15、et/9nine/nan/10ten/ten/11eleven/levn/12twelve/twelv/13thirteen/:ti:n/14fourteen/fti:n/15fifteen/ffti:n/16sixteen/sksti:n/17seventeen/seventi:n/18eighteen/eti:n/19nineteen/nanti:n/20twenty/twent/21twenty-one/twentwn/22twenty-two/twenttu:/23twenty-three/twentri:/24twenty-four/twentf/25twenty-five/twen

16、tfav/26twenty-six/twentsks/27twenty-seven/twentsevn/28twenty-eight/twentet/29twenty-nine/twentnan/30thirty/:t/40forty/ft/50fifty/fft/60sixty/skst/70seventy/sevnt/80eighty/et/90ninety/nant/100a hundred; one hundred/ hndrd/ /wn hndrd/101a hundred and one/ hndrd n wn/102a hundred and two/ hndrd n tu:/110a hundred and ten/ hndrd n ten/120a hundred and twenty/