这些字符是什么：⎲⎳？
我使用 Lyx（Latex 发行版）将我的内容转换为 HTML 页面。
我注意到 Firefox 中表示的西格玛符号由这两个字符组成： ⎲ ⎳
第一个字符用于 Sigma 符号的上部，第二个字符用于下部。我试图在谷歌上搜索这些“奇怪”的字符，但找不到任何东西。这些字符属于 ASCII 吗？谁能告诉我哪里可以找到那些奇怪的角色？
I used Lyx (a Latex distribution) to convert my content to an HTML page.
I noticed that the sigma symbol represented in firefox is composed of these 2 characters:
⎲ ⎳
The first character is for the upper part of Sigma symbol, and second character is for the lower part. I tried to search Google for these "weird" characters but could not find anything. Do those characters even belong to ASCII? Can somebody tell me where I can find those weird characters?
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它是由 Unicode 指定的字符，可以覆盖超过一百万个字符。实际上，人类所知道的每一个字符都在那里详细说明。您可以在 fileformat.info 搜索 中找到有关特定 Unicode 字符的详细信息。
⎲是 Unicode 字符 'SUMMATION TOP' ( U+23B2)⎳是 Unicode 字符“SUMMATION BOTTOM”(U+23B3)为了能够使用它们，您必须使用 Unicode 兼容的字符编码，例如 UTF-8。使用不同的字符编码来呈现它们只会导致 Mojibake。
It are characters which are specified by Unicode which can cover over one million characters. Practically every character the mankind is aware of is specified in there. You can find details about specific Unicode characters at fileformat.info search.
⎲is the Unicode Character 'SUMMATION TOP' (U+23B2)⎳is the Unicode Character 'SUMMATION BOTTOM' (U+23B3)In order to be able to use them, you've to use an Unicode compatible character encoding, such as UTF-8. Using a different character encoding to present them would only result in Mojibake.
它们是 unicode（2 字节）字符。如果您知道编码方案，您可能可以弄清楚它们是什么，可能是 UTF-8。
They're unicode (2-byte) chracters. If you know the encoding scheme, you can probably figure out what they are, likely UTF-8.
它们是 Unicode 字符 U+23B2 SUMMATION TOP 和 U+23B3 求和底部。它们不属于 ASCII，不。
They are the Unicode characters U+23B2 SUMMATION TOP and U+23B3 SUMMATION BOTTOM. They do not belong to ASCII, no.