↡
U+21A1
向下双头箭头 DOWNWARDS TWO HEADED ARROW
| 浏览器默认显示 | ↡ |
| 码位（点代码） | U+21A1 |
| 序号 | 8609 |
| 区段 | 箭头符号 |
| 加入Unicode版本 | 1.1 |
| HTML实体 | ↡ 或 ↡ |
| CSS | \21A1 |
| URL编码 | %E2%86%A1 |
| 域名编码 | xn--l6g |
| UTF编码 | |
| UTF-8 | 0xE2 0x86 0xA1 |
| UTF-16BE | 0x21 0xA1 |
| UTF-16LE | 0xA1 0x21 |
| UTF-32BE | 0x00 0x00 0x21 0xA1 |
| UTF-32LE | 0xA1 0x21 0x00 0x00 |