由于工作的需求，需要在word中插入带入带有上标和下标的字符串，比如这样的一个字符串：SO₄²⁻(mg/L)。在网上搜了好久，终是摸索出点思路。
解决办法：使用转义字符加Unicode的HexEntity就可以实现了。比如定义一个SO₄²⁻(mg/L)这样的字符串如下：”SO\x2084\x00B2\x207B(mg/L)”。其中x2084为 ₄（注意：此处为4的下标） 的Unicode HexEntity，x00B2为 ²（注意：此处为2的上标） 的Unicode HexEntity，x207B为 ⁻（注意：此处为-的上标） 的Unicode HexEntity。
一些常用字符如下：
Common Arithmetic & Alebgra
|
Character Name |
Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| LESS THAN | < | < | < | < |
| GREATER THAN | > | > | > | > |
| LESS THAN OR EQUAL TO | ≤ | ≤ | ≤ | ≤ |
| GREATER THAN OR EQUAL TO | ≥ | ≥ | ≥ | ≥ |
| PLUS OR MINUS | ± | ± | ± | ± |
| NOT EQUALS | ≠ | ≠ | ≠ | ≠ |
| DIVISION SIGN | ÷ | ÷ | ÷ | ÷ |
| TIMES X | × | × | × | × |
| MINUS | − | − | − | − |
| DIVISION SLASH | ∕ | — | ∕ | ∕ |
| FRACTION SLASH | ⁄ | &frasl | ⁄ | ⁄ |
| SQUARE ROOT RADICAL | √ | √ | √ | √ |
| CUBE ROOT | ∛ | — | ∛ | ∛ |
| FOURTH ROOT | ∜ | — | ∜ | ∜ |
| INFINITY | ∞ | ∞ | ∞ | ∞ |
| ALEF INFINITY SYMBOL | ℵ | ℵ | ℵ | ℵ |
| FUNCTION ITALIC F | ƒ | ƒ | ƒ | ƒ |
| PRIME (single quote) | ′ | ′ | ′ | ′ |
| DOUBLE PRIME (double quote) | ″ | ″ | ″ | ″ |
| TRIPLE PRIME (triple quote) | ‴ | — | ‴ | ‴ |
| THEREFORE (Triangular Dots) | ∴ | ∴ | ∴ | ∴ |
| DOT OPERATOR | ⋅ | ⋅ | ⋅ | ⋅ |
| SUPERSCRIPT TWO | ¹ | ¹ | ¹ | ¹ |
| SUPERSCRIPT TWO | ² | ² | ² | ² |
| SUPERSCRIPT THREE | ³ | ³ | ³ | ³ |
| LEFT ANGLE BRACKET | 〈 | ⟨ | 〈 | 〈 |
| RIGHT ANGLE BRACKET | 〉 | ⟩ | 〉 | 〉 |
| LEFT CEILING BRACKET | ⌈ | ⌈ | ⌈ | ⌈ |
| RIGHT CEILING BRACKET | ⌉ | ⌉ | ⌉ | ⌉ |
| LEFT FLOOR BRACKET | ⌊ | ⌈ | ⌊ | ⌊ |
| RIGHT FLOOR BRACKET | ⌋ | ⌉ | ⌋ | ⌋ |
| CIRCLED PLUS (Direct Sum) | ⊕ | ⊕ | ⊕ | ⊕ |
| CIRCLED TIMES (Vector Product) | ⊗ | ⊗ | ⊗ | ⊗ |
Superscript Chart（上标）
| Character Name | Character | Num Entity |
Hex Entity |
|---|---|---|---|
| SUPERSCRIPT ZERO | ⁰ | ⁰ | ⁰ |
| SUPERSCRIPT ONE Entity Code = ¹ |
¹ | ¹ | ¹ |
| SUPERSCRIPT TWO Entity Code = ² |
² | ² | ² |
| SUPERSCRIPT THREE Entity Code = ³ |
³ | ³ | ³ |
| SUPERSCRIPT FOUR | ⁴ | ⁴ | ⁴ |
| SUPERSCRIPT FIVE | ⁵ | ⁵ | ⁵ |
| SUPERSCRIPT SIX | ⁶ | ⁶ | ⁶ |
| SUPERSCRIPT SEVEN | ⁷ | ⁷ | ⁷ |
| SUPERSCRIPT EIGHT | ⁸ | ⁸ | ⁸ |
| SUPERSCRIPT NINE | ⁹ | ⁹ | ⁹ |
| SUPERSCRIPT PLUS SIGN | ⁺ | ⁺ | ⁺ |
| SUPERSCRIPT MINUS | ⁻ | ⁻ | ⁻ |
| SUPERSCRIPT EQUALS SIGN | ⁼ | ⁼ | ⁼ |
| SUPERSCRIPT LEFT PARENTHESIS | ⁽ | ⁽ | ⁽ |
| SUPERSCRIPT RIGHT PARENTHESIS | ⁾ | ⁾ | ⁾ |
| SUPERSCRIPT LATIN SMALL LETTER I | ⁱ | ⁱ | ⁱ |
| SUPERSCRIPT LATIN SMALL LETTER N | ⁿ | ⁿ | ⁿ |
Subscript Codes（下标）
| Character Name | Character | Num Entity |
Hex Entity |
|---|---|---|---|
| SUBSCRIPT ZERO | ₀ | ₀ | ₀ |
| SUBSCRIPT ONE | ₁ | ₁ | ₁ |
| SUBSCRIPT TWO | ₂ | ₂ | ₂ |
| SUBSCRIPT THREE | ₃ | ₃ | ₃ |
| SUBSCRIPT FOUR | ₄ | ₄ | ₄ |
| SUBSCRIPT FIVE | ₅ | ₅ | ₅ |
| SUBSCRIPT SIX | ₆ | ₆ | ₆ |
| SUBSCRIPT SEVEN | ₇ | ₇ | ₇ |
| SUBSCRIPT EIGHT | ₈ | ₈ | ₈ |
| SUBSCRIPT NINE | ₉ | ₉ | ₉ |
| SUBSCRIPT PLUS SIGN | ₊ | ₊ | ₊ |
| SUBSCRIPT MINUS | ₋ | ₋ | ₋ |
| SUBSCRIPT EQUALS SIGN | ₌ | ₌ | ₌ |
| SUBSCRIPT LEFT PARENTHESIS | ₍ | ₍ | ₍ |
| SUBSCRIPT RIGHT PARENTHESIS | ₎ | ₎ | ₎ |
| LATIN SUBSCRIPT SMALL LETTER A | ₐ | ₐ | ₐ |
| LATIN SUBSCRIPT SMALL LETTER E | ₑ | ₑ | ₑ |
| LATIN SUBSCRIPT SMALL LETTER O | ₒ | ₒ | ₒ |
| LATIN SUBSCRIPT SMALL LETTER I | ᵢ | ᵢ | ᵢ |
| LATIN SUBSCRIPT SMALL LETTER R | ᵣ | ᵣ | ᵣ |
| LATIN SUBSCRIPT SMALL LETTER U | ᵤ | ᵤ | ᵤ |
| LATIN SUBSCRIPT SMALL LETTER V | ᵥ | ᵥ | ᵥ |
| LATIN SUBSCRIPT SMALL LETTER X | ₓ | ₓ | ₓ |
| GREEK SUBSCRIPT SMALL LETTER BETA | ᵦ | ᵦ | ᵦ |
| GREEK SUBSCRIPT SMALL LETTER GAMMA | ᵧ | ᵧ | ᵧ |
| GREEK SUBSCRIPT SMALL LETTER RHO | ᵨ | ᵨ | ᵨ |
| GREEK SUBSCRIPT SMALL LETTER PHI | ᵩ | ᵩ | ᵩ |
| GREEK SUBSCRIPT SMALL LETTER CHI | ᵪ | ᵪ | ᵪ |
Superscript and Subscript
Check these references for other methods to implement superscript/subscript and extra fractions
Fractions
These codes display fractions set to be all within one line with smaller number, but they can be replaced by other ways of typing a fraction (e.g. “1/2”).
— means no HTML entity code exists and that a numeric code must be used.
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| VULGAR FRACTION 1/4 | ¼ | ¼ | ¼ | ¼ |
| VULGAR FRACTION 1/2 | ½ | ½ | ½ | ½ |
| VULGAR FRACTION 3/4 | ¾ | ¾ | ¾ | ¾ |
| VULGAR FRACTION 1/3 | ⅓ | — | ⅓ | ⅓ |
| VULGAR FRACTION 2/3 | ⅔ | — | ⅔ | ⅔ |
| VULGAR FRACTION 1/5 | ⅕ | — | ⅕ | ⅕ |
| VULGAR FRACTION 2/5 | ⅖ | — | ₢ | ⅖ |
| VULGAR FRACTION 3/5 | ⅗ | — | ⅗ | ⅗ |
| VULGAR FRACTION 4/5 | ⅘ | — | ⅘ | ⅘ |
| VULGAR FRACTION 1/6 | ⅙ | — | ⅙ | ⅙ |
| VULGAR FRACTION 5/6 | ⅚ | — | ⅚ | ⅚ |
| VULGAR FRACTION 1/8 | ⅛ | — | ⅛ | ⅛ |
| VULGAR FRACTION 3/8 | ⅜ | — | ⅜ | ⅜ |
| VULGAR FRACTION 5/8 | ⅝ | — | ⅝ | ⅝ |
| VULGAR FRACTION 7/8 | ⅞ | — | ₖ | ⅞ |
Common Statistics
— means no HTML entity code exists and that a numeric code must be used.
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| LOWER CASE MU (Mean) | μ | μ | μ | μ |
| LOWER CASE SIGMA (Standard Deviation) | σ | σ | σ | σ |
| LOWER CASE CHI | χ | χ | χ | χ |
| CAPITAL PI N-ARY PRODUCT | ∏ | ∏ | ∑ | ∑ |
| N-ARY COPRODUCT (upside down capital pi) | ∐ | — | ∐ | ∐ |
X-Bar, P-Hat and D-Bar
Some codes like that for x̄ (X-bar) are actually a combination of two codes – the base letter x plus a code for the line above (̄: or ̄). Capital letter may need to be reduced in size to accomodate the placement of the combining diacritic.
Note on Safari: These symbols use combining characters and may not be correctly Safari 2 or other older browsers.
| Character Name | Character | HTML Code |
|---|---|---|
| X-Bar (Average) | x̄ | x̄ |
| P-Hat | p̂ | p̂ |
| D-Bar | D̄ | <span style=”font-size:80%”>D</span>̄ |
Measurement Symbols
Common Symbols
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| DEGREE SYMBOL | ° | ° | ° | ° |
| MICRO MU SYMBOL | µ | µ | µ | µ |
| SINGLE PRIME (feet, degree minutes) | ′ | ′ | ′ | ߰ |
| DOUBLE PRIME (feet, degree minutes) | ″ | ″ | ′ | ߰ |
| PER MILLE (1/1000th) | ‰ | ‰ | ‰ | ߮ |
Calculus
Common Calculus Entity Codes
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| INTEGRAL | ∫ | ∫ | ∫ | ∫ |
| PARTIAL DIFFERENTIAL | ∂ | ∂ | ∂ | ࢚ |
| INCREMENT (Difference or capital Delta) | Δ | Δ | ∆ | ∆ |
| NABLA (Backward Difference, Grad or upside down triangle) | ∇ | ∇ | ∇ | ∇ |
Additional Integral Symbols
These symbols have numeric entity codes only.
| Character Name | Character | Num Entity |
Hex Entity |
|---|---|---|---|
| DOUBLE INTEGRAL | ∬ | ∬ | ∬ |
| TRIPLE INTEGRAL | ∭ | ∭ | ∭ |
| QUADRUPLE INTEGRAL | ⨌ | ⨌ | ⨌ |
| CONTOUR INTEGRAL | ∮ | ∮ | ∮ |
| SURFACE INTEGRAL | ∯ | ∯ | ∯ |
| VOLUME INTEGRAL | ∰ | ∰ | ∰ |
| CLOCKWISE INTEGRAL | ∱ | ∱ | ∱ |
| ANTICCLOCKWISE INTEGRAL | ⨑ | ⨑ | ⨑ |
| CLOCKWISE CONTOUR INTEGRAL | ∲ | ∲ | ∲ |
| ANTICLOCKWISE CONTOUR INTEGRAL | ∳ | ∳ | ∳ |
Letter Symbols
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| INFINITY (Sideways 8) | ∞ | ∞ | ∞ | ∞ |
| ALEF INFINITY SYMBOL | ℵ | ℵ | ℵ | ℵ |
| WEIERSTRASS POWER SET (Script Capital P) | ℘ | ℘ | ℘ | ℘ |
| IMAGINARY NUMBER (Blackletter I) | ℑ | ℑ | ′ | ′ |
| REAL NUMBER (Blackletter I) | ℜ | ′ | ′ | |
| DOUBLE-STRUCK REAL NUMBER (Double R) | ℝ | — | ℝ | ℝ |
| COMPLEX NUMBERS (Double C) | ℂ | — | ℂ | ℂ |
| NATURAL NUMBERS (Double N) | ℕ | — | ℕ | ℕ |
| PRIME NUMBERS (Double P) | ℙ | — | ℙ | ℙ |
| RATIONAL NUMBERS (Double Q) | ℚ | — | ℚ | ℚ |
| INTEGERS (Double Z) | ℤ | — | ℤ | ℤ |
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| FOR ALL (Upside-down A) | ∀ | ∀ | ∀ | ∀ |
| COMPLEMENT (Thin C) | ∁ | — | ∁ | ∁ |
| THERE EXISTS (Backwards E) | ∃ | ∃ | ∃ | ∃ |
| THERE DOES NOT EXIST (Backwards E with slash) | ∄ | — | ∄ | ∄ |
| EMPTY SET (O slash) | ∅ | ∅ | ∅ | ∅ |
| NOT SYMBOL (Corner) | ¬ | ¬ | ¬ | ¬ |
| TILDE (Alternate Not Symbol) | ˜ | ˜ | — | — |
| LOGICAL AND (Wedge or Upside down V Symbol) | ∧ | ∧ | ∧ | ∧ |
| LOGICAL OR (V Symbol) | ∨ | ∨ | ∨ | ∨ |
| XOR | ⊻ | — | ⊻ | ⊻ |
| NAND | ⊼ | — | ⊼ | ⊼ |
| NOR | ⊽ | — | ⊽ | ⊽ |
| INTERSECTION (Cap or Upside Down U) | ∩ | ∩ | ∩ | ∩ |
| UNION (Cup or U Symbol) | ∪ | ∪ | ∪ | ∪ |
| ELEMENT OF | ∈ | ∈ | ∈ | ∈ |
| NOT AN ELEMENT OF | ∉ | ∉ | ∉ | ∉ |
| SMALL ELEMENT OF | ∊ | — | ∊ | ∊ |
| CONTAINS AS MEMBER | ∋ | ∋ | ∋ | ∋ |
| DOES NOT CONTAIN AS MEMBER | ∌ | — | ∌ | ∌ |
| SMALL CONTAINS AS MEMBER | ∍ | — | ∍ | ∍ |
| SET MINUS | ∖ | — | ∖ | ∖ |
| SUBSET OF (Sideways U with cap to left) | ⊂ | ⊂ | ⊂ | ⊂ |
| SUPERSET OF (Sideways U with cap to right) | ⊃ | ⊃ | ⊃ | ⊃ |
| NOT A SUBSET OF (Subset with Slash) | ⊄ | ⊄ | ⊄ | ⊄ |
| NOT A SUPERSET OF (Superset with slash) | ⊅ | — | ⊅ | ⊅ |
| SUBSET OF OR EQUAL TO (Subset with line below) | ⊆ | ⊆ | ⊆ | ⊆ |
| SUPERSET OF OR EQUAL TO (Superset with line below) | ⊇ | ⊇ | ⊇ | ⊇ |
| NEITHER A SUBSET OF NOR EQUAL TO | ⊈ | — | ⊈ | ⊈ |
| NEITHER A SUPERSET OF NOR EQUAL TO | ⊉ | — | ⊉ | ⊉ |
| SUBSET OF WITH NOT EQUAL TO | ⊊ | — | ⊊ | ⊊ |
| SUPERSET OF WITH NOT EQUAL TO | ⊋ | — | ⊋ | ⊋ |
| DIAMOND OPERATOR (Possibility) |
⋄ | — | ⋄ | ⋄ |
| ASYMPTOTICALLY EQUAL TO One to one Correspondence |
≃ | — | ≃ | ≃ |
| NOT ASYMPTOTICALLY EQUAL TO | ≄ | — | ≄ | ≄ |
| MULTISET (U with arrow) | ⊌ | — | ⊌ | ⊌ |
| MULTISET MULTIPLICATION (U with dot in center) | ⊍ | — | ⊍ | ⊍ |
| MULTISET UNION (U with plus in center) | ⊎ | — | ⊎ | ⊎ |
| DOUBLE SUBSET | ⋐ | — | ⋐ | ⋐ |
| DOUBLE SUPERSET | ⋑ | — | ⋑ | ⋑ |
| DOUBLE INTERSECTION | ⋒ | — | ⋒ | ⋒ |
| DOUBLE UNION | ⋓ | — | ⋓ | ⋓ |
| N-ARY LOGICAL AND | ⋀ | — | ⋀ | ⋀ |
| N-ARY LOGICAL OR | ⋁ | — | ⋁ | ⋁ |
| N-ARY INTERSECTION&cu | ⋂ | — | ⋂ | ⋂ |
| N-ARY UNION | ⋃ | — | ⋃ | ⋃ |
| CURLY LOGICAL OR | ⋎ | — | ⋎ | ⋎ |
| CURLY LOGICAL AND | ⋏ | — | ⋏ | ⋏ |
| CIRCLED PLUS (Direct Sum) | ⊕ | ⊕ | ⊕ | ⊕ |
| CIRCLED TIMES (Vector Product) | ⊗ | ⊗ | ⊗ | ⊗ |
| CIRCLED MINUS | ⊖ | — | ⊖ | ⊖ |
| CIRCLED DIVISION SLASH | ⊘ | — | ⊘ | ⊘ |
Other Element Of Symbols
| ELEMENT OF WITH LONG HORIZONTAL STROKE | ⋲ | ⋲ | ⋲ |
| ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKE | ⋳ | ⋳ | ⋳ |
| SMALL ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKE | ⋴ | ⋴ | ⋴ |
| ELEMENT OF WITH DOT ABOVE | ⋵ | ⋵ | ⋵ |
| ELEMENT OF WITH OVERBAR | ⋶ | ⋶ | ⋶ |
| SMALL ELEMENT OF WITH OVERBAR | ⋷ | ⋷ | ⋷ |
| ELEMENT OF WITH UNDERBAR | ⋸ | ⋸ | ⋸ |
| ELEMENT OF WITH TWO HORIZONTAL STROKES | ⋹ | ⋹ | ⋹ |
| CONTAINS WITH LONG HORIZONTAL STROKE | ⋺ | ⋺ | ⋺ |
| CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKE | ⋻ | ⋻ | ⋻ |
| SMALL CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKE | ⋼ | ⋼ | ⋼ |
| CONTAINS WITH OVERBAR | ⋽ | ⋽ | ⋽ |
| SMALL CONTAINS WITH OVERBAR | ⋾ | ⋾ | ⋾ |
| NOTATION BAG MEMBERSHIP | ⋿ | ⋿ | ⋿ |
Geometric Symbols
Note: The entity code for the Angle Symbol (∠) is ∠ and the code for the perpendicular angle (⊥) is⊥.
Otherwise, these symbols have numeric codes only.
Angles and Lines
| Character Name | Character | Num Entity |
Hex Entity |
|---|---|---|---|
| RIGHT ANGLE | ∟ | ∟ | ∟ |
| ANGLE Entity Code = ∠ |
∠ | ∠ | ∠ |
| MEASURED ANGLE | ∡ | ∡ | ∡ |
| SPHERICAL ANGLE | ∢ | ∢ | ∢ |
| DIVIDES | ∣ | ∣ | ∣ |
| DOES NOT DIVIDE | ∤ | ∤ | ∤ |
| PARALLEL TO | ∥ | ∥ | ∥ |
| NOT PARALLEL TO | ∦ | ∦ | ∦ |
| RIGHT ANGLE WITH ARC | ⊾ | ⊾ | ⊾ |
| RIGHT TRIANGLE | ⊿ | ⊿ | ⊿ |
| UP TACK (Perpendicular) Entity Code = ⊥ |
⊥ | ⊥ | ⊥ |
| RIGHT TACK | ⊢ | ⊢ | ⊢ |
| LEFT TACK | ⊣ | ⊣ | ⊣ |
| DOWN TACK | ⊤ | ⊤ | ⊤ |
Logical Proofs
Note: The entity code for the Therefore Symbol (∴) is ∴. Otherwise, these symbols have numeric codes only.
| Character Name | Character | Num Entity |
Hex Entity |
|---|---|---|---|
| THEREFORE (Triangular Dots) Entity Code = ∴ |
∴ | ∴ | ∴ |
| BECAUSE (Upside down Triangular Dots) | ∵ | ∵ | ∵ |
| PROPORTIONAL TO Entity Code = ∝ |
∝ | ∝ | ∝ |
| END OF PROOF (solid rectangle) | ∎ | ∎ | ∎ |
Common Equivalence and Proportion Operators
Common Equivalence Operators
| Character Name | Character | Entity | Num Entity |
Hex Entity |
|---|---|---|---|---|
| NOT EQUALS | ≠ | ≠ | ≠ | ≠ |
| APPROXIMATELY EQUAL | ≅ | ≅ | ≅ | ≅ |
| ALMOST EQUAL (ASYMPTOTIC) | ≈ | ≈ | ≈ | ≈ |
| NOT ALMOST EQUAL TO | ≉ | — | ≉ | ≉ |
| TILDE SIMILAR TO | ∼ | ∼ | ∼ | ∼ |
| IDENTICAL TO (three lines) | ≡ | ≡ | ≡ | ≡ |
| NOT IDENTICAL TO | ≢ | — | ≢ | ≢ |
Other Equivalence Symbols
| STRICTLY EQUIVALENT TO | ≣ | ≣ | ≣ |
| NOT IDENTICAL TO | ≢ | ≢ | ≢ |
| LESS-THAN OVER EQUAL TO | ≦ | ≦ | ≦ |
| GREATER-THAN OVER EQUAL TO | ≧ | ≧ | ≧ |
| LESS-THAN BUT NOT EQUAL TO | ≨ | ≨ | ≨ |
| GREATER-THAN BUT NOT EQUAL TO | ≩ | ≩ | ≩ |
| MUCH LESS-THAN | ≪ | ≪ | ≪ |
| MUCH GREATER-THAN | ≫ | ≫ | ≫ |
| BETWEEN | ≬ | ≬ | ≬ |
| NOT EQUIVALENT TO | ≭ | ≭ | ≭ |
| NOT LESS-THAN | ≮ | ≮ | ≮ |
| NOT GREATER-THAN | ≯ | ≯ | ≯ |
| NEITHER LESS-THAN NOR EQUAL TO | ≰ | ≰ | ≰ |
| NEITHER GREATER-THAN NOR EQUAL TO | ≱ | ≱ | ≱ |
| LESS-THAN OR EQUIVALENT TO | ≲ | ≲ | ≲ |
| GREATER-THAN OR EQUIVALENT TO | ≳ | ≳ | ≳ |
| NEITHER LESS-THAN NOR EQUIVALENT TO | ≴ | ≴ | ≴ |
| NEITHER GREATER-THAN NOR EQUIVALENT TO | ≵ | ≵ | ≵ |
| LESS-THAN OR GREATER-THAN | ≶ | ≶ | ≶ |
| GREATER-THAN OR LESS-THAN | ≷ | ≷ | ≷ |
| NEITHER LESS-THAN NOR GREATERTHAN | ≸ | ≸ | ≸ |
| NEITHER GREATER-THAN NOR LESSTHAN | ≹ | ≹ | ≹ |
| NOT TILDE | ≁ | ≁ | ≁ |
| MINUS TILDE | ≂ | ≂ | ≂ |
| ASYMPTOTICALLY EQUAL TO | ≃ | ≃ | ≃ |
| NOT ASYMPTOTICALLY EQUAL TO | ≄ | ≄ | ≄ |
| APPROXIMATELY BUT NOT ACTUALLY EQUAL TO | ≆ | ≆ | ≆ |
| NEITHER APPROXIMATELY NOR ACTUALLY EQUAL TO | ≇ | ≇ | ≇ |
| NOT ALMOST EQUAL TO | ≉ | ≉ | ≉ |
| ALMOST EQUAL OR EQUAL TO | ≊ | ≊ | ≊ |
| TRIPLE TILDE | ≋ | ≋ | ≋ |
| ALL EQUAL TO | ≌ | ≌ | ≌ |
Unicode对照表参考了： http://blog.csdn.net/snowdust/article/details/5895593
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