HTML附加命名实体 Additional Named Entities for HTML
| Character 字符 | Named entity 已命名实体 | Numeric character reference 数字字符引用（十进制） | Description 简介 |
|---|---|---|---|
| 扩展拉丁字符 Latin Extended-B | |||
| ƒ | ƒ | ƒ | Latin small f with hook, =function, =florin, U0192 ISOtech |
| 希腊字符 Greek | |||
| Α | Α | Α | Greek capital letter alpha, U0391 |
| Β | Β | Β | Greek capital letter beta, U0392 |
| Γ | Γ | Γ | Greek capital letter gamma, U0393 ISOgrk3 |
| Δ | Δ | Δ | Greek capital letter delta, U0394 ISOgrk3 |
| Ε | Ε | Ε | Greek capital letter epsilon, U0395 |
| Ζ | Ζ | Ζ | Greek capital letter zeta, U0396 |
| Η | Η | Η | Greek capital letter eta, U0397 |
| Θ | Θ | Θ | Greek capital letter theta, U0398 ISOgrk3 |
| Ι | Ι | Ι | Greek capital letter iota, U0399 |
| Κ | Κ | Κ | Greek capital letter kappa, U039A |
| Λ | Λ | Λ | Greek capital letter lambda, U039B ISOgrk3 |
| Μ | Μ | Μ | Greek capital letter mu, U039C |
| Ν | Ν | Ν | Greek capital letter nu, U039D |
| Ξ | Ξ | Ξ | Greek capital letter xi, U039E ISOgrk3 |
| Ο | Ο | Ο | Greek capital letter omicron, U039F |
| Π | Π | Π | Greek capital letter pi, U03A0 ISOgrk3 |
| Ρ | Ρ | Ρ | Greek capital letter rho, U03A1 |
| Σ | Σ | Σ | Greek capital letter sigma, U03A3 ISOgrk3 |
| Τ | Τ | Τ | Greek capital letter tau, U03A4 |
| Υ | Υ | Υ | Greek capital letter upsilon, U03A5 ISOgrk3 |
| Φ | Φ | Φ | Greek capital letter phi, U03A6 ISOgrk3 |
| Χ | Χ | Χ | Greek capital letter chi, U03A7 |
| Ψ | Ψ | Ψ | Greek capital letter psi, U03A8 ISOgrk3 |
| Ω | Ω | Ω | Greek capital letter omega, U03A9 ISOgrk3 |
| α | α | α | Greek small letter alpha, U03B1 ISOgrk3 |
| β | β | β | Greek small letter beta, U03B2 ISOgrk3 |
| γ | γ | γ | Greek small letter gamma, U03B3 ISOgrk3 |
| δ | δ | δ | Greek small letter delta, U03B4 ISOgrk3 |
| ε | ε | ε | Greek small letter epsilon, U03B5 ISOgrk3 |
| ζ | ζ | ζ | Greek small letter zeta, U03B6 ISOgrk3 |
| η | η | η | Greek small letter eta, U03B7 ISOgrk3 |
| θ | θ | θ | Greek small letter theta, U03B8 ISOgrk3 |
| ι | ι | ι | Greek small letter iota, U03B9 ISOgrk3 |
| κ | κ | κ | Greek small letter kappa, U03BA ISOgrk3 |
| λ | λ | λ | Greek small letter lambda, U03BB ISOgrk3 |
| μ | μ | μ | Greek small letter mu, U03BC ISOgrk3 |
| ν | ν | ν | Greek small letter nu, U03BD ISOgrk3 |
| ξ | ξ | ξ | Greek small letter xi, U03BE ISOgrk3 |
| ο | ο | ο | Greek small letter omicron, U03BF NEW |
| π | π | π | Greek small letter pi, U03C0 ISOgrk3 |
| ρ | ρ | ρ | Greek small letter rho, U03C1 ISOgrk3 |
| ς | ς | ς | Greek small letter final sigma, U03C2 ISOgrk3 |
| σ | σ | σ | Greek small letter sigma, U03C3 ISOgrk3 |
| τ | τ | τ | Greek small letter tau, U03C4 ISOgrk3 |
| υ | υ | υ | Greek small letter upsilon, U03C5 ISOgrk3 |
| φ | φ | φ | Greek small letter phi, U03C6 ISOgrk3 |
| χ | χ | χ | Greek small letter chi, U03C7 ISOgrk3 |
| ψ | ψ | ψ | Greek small letter psi, U03C8 ISOgrk3 |
| ω | ω | ω | Greek small letter omega, U03C9 ISOgrk3 |
| ϑ | ϑ | ϑ | Greek small letter theta symbol, U03D1 NEW |
| ϒ | ϒ | ϒ | Greek upsilon with hook symbol, U03D2 NEW |
| ϖ | ϖ | ϖ | Greek pi symbol, U03D6 ISOgrk3 |
| 通用标点符号 General Punctuation | |||
| • | • | • | bullet, =black small circle, U2022 ISOpub |
| … | … | … | horizontal ellipsis, =three dot leader, U2026 ISOpub |
| ′ | ′ | ′ | prime, =minutes, =feet, U2032 ISOtech |
| ″ | ″ | ″ | double prime, =seconds, =inches, U2033 ISOtech |
| ‾ | ‾ | ‾ | overline, =spacing overscore, U203E NEW |
| ⁄ | ⁄ | ⁄ | fraction slash, U2044 NEW |
| 字符标记 Letterlike Symbols | |||
| ℘ | ℘ | ℘ | script capital P, =power set, =Weierstrass p, U2118 ISOamso |
| ℑ | ℑ | ℑ | blackletter capital I, =imaginary part, U2111 ISOamso |
| ℜ | ℜ | ℜ | blackletter capital R, =real part symbol, U211C ISOamso |
| ™ | ™ | ™ | trade mark sign, U2122 ISOnum |
| ℵ | ℵ | ℵ | alef symbol, =first transfinite cardinal, U2135 NEW |
| 箭头 Arrows | |||
| ← | ← | ← | leftward arrow, U2190 ISOnum |
| ↑ | ↑ | ↑ | upward arrow, U2191 ISOnum |
| → | → | → | rightward arrow, U2192 ISOnum |
| ↓ | ↓ | ↓ | downward arrow, U2193 ISOnum |
| ↔ | ↔ | ↔ | left right arrow, U2194 ISOamsa |
| ↵ | ↵ | ↵ | downward arrow with corner leftward, =carriage return, U21B5 NEW |
| ⇐ | ⇐ | ⇐ | leftward double arrow, U21D0 ISOtech |
| ⇑ | ⇑ | ⇑ | upward double arrow, U21D1 ISOamsa |
| ⇒ | ⇒ | ⇒ | rightward double arrow, U21D2 ISOtech |
| ⇓ | ⇓ | ⇓ | downward double arrow, U21D3 ISOamsa |
| ⇔ | ⇔ | ⇔ | left right double arrow, U21D4 ISOamsa |
| 数学符号 Mathematical Operators | |||
| ∀ | ∀ | ∀ | for all, U2200 ISOtech |
| ∂ | ∂ | ∂ | partial differential, U2202 ISOtech |
| ∃ | ∃ | ∃ | there exists, U2203 ISOtech |
| ∅ | ∅ | ∅ | empty set, =null set, =diameter, U2205 ISOamso |
| ∇ | ∇ | ∇ | nabla, =backward difference, U2207 ISOtech |
| ∈ | ∈ | ∈ | element of, U2208 ISOtech |
| ∉ | ∉ | ∉ | not an element of, U2209 ISOtech |
| ∋ | ∋ | ∋ | contains as member, U220B ISOtech |
| ∏ | ∏ | ∏ | n-ary product, =product sign, U220F ISOamsb |
| − | ∑ | − | n-ary sumation, U2211 ISOamsb |
| − | − | − | minus sign, U2212 ISOtech |
| ∗ | ∗ | ∗ | asterisk operator, U2217 ISOtech |
| √ | √ | √ | square root, =radical sign, U221A ISOtech |
| ∝ | ∝ | ∝ | proportional to, U221D ISOtech |
| ∞ | ∞ | ∞ | infinity, U221E ISOtech |
| ∠ | ∠ | ∠ | angle, U2220 ISOamso |
| ⊥ | ∧ | ⊥ | logical and, =wedge, U2227 ISOtech |
| ⊦ | ∨ | ⊦ | logical or, =vee, U2228 ISOtech |
| ∩ | ∩ | ∩ | intersection, =cap, U2229 ISOtech |
| ∪ | ∪ | ∪ | union, =cup, U222A ISOtech |
| ∫ | ∫ | ∫ | integral, U222B ISOtech |
| ∴ | ∴ | ∴ | therefore, U2234 ISOtech |
| ∼ | ∼ | ∼ | tilde operator, =varies with, =similar to, U223C ISOtech |
| ≅ | ≅ | ≅ | approximately equal to, U2245 ISOtech |
| ≅ | ≈ | ≅ | almost equal to, =asymptotic to, U2248 ISOamsr |
| ≠ | ≠ | ≠ | not equal to, U2260 ISOtech |
| ≡ | ≡ | ≡ | identical to, U2261 ISOtech |
| ≤ | ≤ | ≤ | less-than or equal to, U2264 ISOtech |
| ≥ | ≥ | ≥ | greater-than or equal to, U2265 ISOtech |
| ⊂ | ⊂ | ⊂ | subset of, U2282 ISOtech |
| ⊃ | ⊃ | ⊃ | superset of, U2283 ISOtech |
| ⊄ | ⊄ | ⊄ | not a subset of, U2284 ISOamsn |
| ⊆ | ⊆ | ⊆ | subset of or equal to, U2286 ISOtech |
| ⊇ | ⊇ | ⊇ | superset of or equal to, U2287 ISOtech |
| ⊕ | ⊕ | ⊕ | circled plus, =direct sum, U2295 ISOamsb |
| ⊗ | ⊗ | ⊗ | circled times, =vector product, U2297 ISOamsb |
| ⊥ | ⊥ | ⊥ | up tack, =orthogonal to, =perpendicular, U22A5 ISOtech |
| ⋅ | ⋅ | ⋅ | dot operator, U22C5 ISOamsb |
| 其他技术符号 Miscellaneous Technical | |||
| ⌈ | ⌈ | ⌈ | left ceiling, =apl upstile, U2308, ISOamsc |
| ⌉ | ⌉ | ⌉ | right ceiling, U2309, ISOamsc |
| ⌊ | ⌊ | ⌊ | left floor, =apl downstile, U230A, ISOamsc |
| ⌋ | ⌋ | ⌋ | right floor, U230B, ISOamsc |
| 〈 | ⟨ | 〈 | left-pointing angle bracket, =bra, U2329 ISOtech |
| 〉 | ⟩ | 〉 | right-pointing angle bracket, =ket, U232A ISOtech |
| 几何图形 Geometric Shapes | |||
| ◊ | ◊ | ◊ | lozenge, U25CA ISOpub |
| 其他标记 Miscellaneous Symbols | |||
| ♠ | ♠ | ♠ | black spade suit, U2660 ISOpub |
| ♣ | ♣ | ♣ | black club suit, =shamrock, U2663 ISOpub |
| ♥ | ♥ | ♥ | black heart suit, =valentine, U2665 ISOpub |
| ♦ | ♦ | ♦ | black diamond suit, U2666 ISOpub |