数学的英语怎么读

数学的英语怎么读

军事高技术的特征-稻草人手记

2023年2月22日发(作者：吉林玉米)

"+-"等数学符号用英语怎么读？

符号的英文读法

period句号

≈isapproximatelyequalto约等于号

,comma逗号

＜islessthan小于号

：colon冒号

＞ismorethan大于号

；semicolon分号B

≤isnotlessthan不小于号

！exclamation惊叹号

≥isnotmorethan不大于号

？questionmark问号

≢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

＋plus加号；正号

∩intersectionof交，通集

－minus减号；负号

∫theintegralof…的积分

±plusorminus正负号

∑(sigma)summationof总和

×ismultipliedby乘号

°degree度

÷isdividedby除号

′minute分

＝isequalto等于

″second秒

≠isnotequalto不等于号

＃number…号

≡isequivalentto全等于号

℃Celsiussystem摄氏度

≌isequaltoorapproximatelyequalto等于或约等于号

＠at单价

1、

max

s

l

P

fv



Toldas:τ

max

islessthanandequaltoPoverf

s,

andequaltoloverv.

2、

22

31

2.93

(1)aD

hE

C

a





Toldas:C

aD

isabouttwopointninethreemultiplyhovera

3

tothesecondpowerandtherootofE

overρ

1

multiplytheresultof1minusσtothesecondpower.

3、

1212

DDLL

Toldas：theabsolutevalueofD

1

minusD

2

isgreatertheabsolutevalueofL

1

minusL

2.

4、





11

22

xksknk

xkskDnk















Toldas:x

1

isthefunctionofkequalssisthefunctionofkplusn

1

isthefunctionofk.x

2

isthe

functionofkequalsasthequantitykminusDplusn

2

isthefunctionofk.

5、

2

123

11

11

2

1

NaN

aC

xxx

dxdx

MRp

dtdtC





Toldas:M

N1

multiplythesecondderivativeofx

1

withrespecttotplusR

aN1

timesthefirst

derivativeofx

1

withrespecttotplusthevalueofx1minusx

2

andminusx

3

overC

aC1

equalsp.

6、

/2

2

0

()b

m

BxdxBl

Toldas:thedefiniteintegralB

2

ofxwithlimitfromatobovertwowithrespecttoxequalsthe

averagevalueofB

m

multiplyl.

7、0

1

ln

22()cos

m

m

I

h

B

lhrd

















Toldas:theaveragevalueofB

1m

equalsthevalueofμomultiplyI

m

overthevalueoftwomultiplyl

timesnaturallogarithmicfunctionofhoverthevaluehminustwotimesthevalueofrplusdand

timestheabsolutevaluecosө

8、

22

2

12

2

00

22

4()

1exp()1exp()mm

mm

lBlB

rd

IIh











Toldas:thevalueofoneminusexponentialnegativetwotimesltimestheaverageB

1m

overμo

timesI

m

tothesecondpowermultiplythevalueofoneminusexponentialnegativetwotimesl

timestheaverageB

2m

overμotimesI

m

tothesecondpowerequalfourtimesthevalueofrplusd

tothesecondpoweroverhtothesecondpower.

9、44

11

0000

()(2)()nn

iiii

m

ii

rr

ldBl

LxdhxBx

IHdl

dSdS





















Toldas:I

m

equalstheclosedlinerintegralHvectoralonglequals∑indexifrom1tonl

i

multiply

dmultiplyϕ

i

overμ

o

multiplyμ

r

multiplythedifferentialofSplusL

4

ofxmultiplythedifferential

ofϕoverμ

o

multiplythedifferentialofSequals∑indexifrom1tonthevalueofB

i

timesl

i

over

μ

o

multiplyμ

r

plusthedifferentvalueofhminustwotimesxthenmultiplyB

4

ofxoverμ

o

10、Newton’sLawofUniversalGravitation

Forparticles,havemasse

1

mand

2

mandareseparatedbyadistancer,theforcethateach

exertsontheotherisdirectedalongthelinejoiningtheparticlesandhasamagnitudegivenby

12

2

mm

FG

r



(Toldas:theuniversalgravitationFequalstheuniversalconstantGmultiplymassm

1

multiply

massm

2

overrwhichisthedistancebetweenmassm

1

andmassm

2

tothesecond

power.）

ThesymbolGdenotestheuniversalconstant,whosevalueisfoundexperimentallytobe

11226.6725910mGNkg

(Toldas:theuniversalconstantequalssixpointsixseventwofiveninemultiplytenfollow

negativeelevenzerosunitnewtontimesmetertothesecondpowereverykilogramtothesecond

power.)