Common symbols: +: Plus (positive) -: Minus (negative) *: Multiplied Partition: divided =: Be equal ≈: Be approximately equal (): Round brackets (parenthess) []: Square brackets {}: Braces Usage: Because Authorization: therefore ≤: Less than or equal ≥: Greater than or equal ∞: Infinity : LogX to the base n : The Nth Power of X F (x): The function of X DX: diffrencial of X X + Y: x plus y (A + B): bracket A plus B bracket closed A = B: A equals B A = B: A isn' t equal to B A> B: A is greater than B A> B: A is much greater than B A ≥ B: A is greater than or equal to B X → ∞: X approches infinity : X square : X cube : The square root of X <Is less
> Is more
Operation is not less
Operation is not more
≤Is less than or equal
-Hyphen
≥Is more than or equal to greater than or equal
'Apostrophe ellipsis, which is used to omit characters in English. All vertices
% Percent
-Dash
‰ Per mille
∞ Infinity unlimited large
∝ Varies as and... Proportional
() Parentheses
√ (Square) root square root
[] Square brackets
∵ Since; because
French quotes; book name
∴ Hence so
... Ellipsis ellipsis
Equal equals, as (proportion) is equal to, proportional
"Tandem colon"
Angle
: Ditto dual-point number
Eclipsemicircle semi-circle
‖ Parallel dual line number
⊙ Circle
/Virgule diagonal line
○ Circumference
~ Swung dash font size
△Triangle triangle
Section; Division part number
Extends perpendicular
→ Arrow number; see no.
Merge Union of union, Collection
Intersection of intersection, interset
Specify the integral... Credits
± Plus or minus plus and minus signs
Σ summation of Sum
×Is multiplied
° Degree
Division is divided by Division
'Minute points
″ Second seconds
=Is not equal to No.
Token is equivalent to all equal sign
℃ Celsius degree Celsius
Operation is equal to or approximately equal to or equal to No.
Computer compiled into common symbols English pronunciation:
Backquote quotation marks
~ Tilde
! Exclam
@
# Numbersign: hash in English, pound in American, and sharp in music, such as C #
$ Dollar
% Percent
^ Caret
& Ampersand
* Asterisk, Star (American), and multiply in mathematical formulas
(Parenleft, opening parentheses
) Parenright, closing paretheses
-Minus; hyphen hyphens, not read
_ Underscore
+ Plus
= Equal
[Bracketleft, opening bracket
] Bracketright, closing bracket
{Braceleft
} Braceright
; Semicolon
: Colon
'Quote
"Doublequote
/Slash
/Backslash
| Bar
, Comma
<Less
> Greater
. Period
? Question
Space
Greek letter reading method: No. upper case and lower case English Phonetic Alphabet Chinese phonetic alphabet
1) α Alpha A: lf Alpha angle; Coefficient
2 beta bet beta magnetic flux coefficient; angle; Coefficient
3 Gamma GA: m gamma conductivity coefficient (lower case)
4 Delta delt Delta change; density; refractive power
5 Ε ε Epsilon EP 'number of the silon iloan logarithm
6) Ζ ε zat truncation tower coefficient; azimuth angle; Impedance; relative viscosity; atomic sequence number
7 * eta eit eta; efficiency (lower case)
8 Θ θ thet θ it tower temperature; Phase Angle
9. Tiny, a little bit
10 Κ Kappa KAP kapa medium constant
11 Lambda lambd lamboda wavelength (lower case); Volume
12 Mu mju lead magnetic conductivity; micro (1‰); amplification factor (lower case)
13 ν nu nju new reluctance Coefficient
14. 127ε Xi KSI
15 minutes ago Omicron OMIK 'ron omixerong
16 percentile π PI Pai circumference rate = circumference diameter = 3.1416
17 Ρ p-rock Rou meat resistance coefficient (lower case)
18 Σ σ Sigma 'sigma Sigma total (upper case), surface density; cross-guide (lower case)
19 Τ tau Set Time Constant
20 Υ υ upsilon jup 'silon yupu xilong displacement
21 Phi Fai foio magnetic flux; Angle
22 o'chi PHAI West
23 Gbit/s PSI psai Puxi angular speed; medium-voltage flux (static power line); Angle
24 omega o 'miga Omega ohm (uppercase); speed (lowercase); Angle |
