Unique because it has a pattern of the mathematical symbol pi.
之所以说它特别是因为上面有圆周率π的数学符号。
mathematical symbol
英汉-汉英词典
数学符号；运算符号
词组 | 习惯用语
您要查找的是不是：
Mathematical symbols 数学符号; 杅悝睫疡;
the mathematic symbols 数学符号
mathematical symbol language 数学符号语言
Miscellaneous Mathematical Symbols 符号A
mathematical Symbols Recognition 数学符号识别
system of mathematical symbols 数学符号系统
Miscellaneous Mathematical Symbols-B 杂项数学符号
mathematical symbols 数学符号（mathematical symbol的复数）
mathematical symbol [数] 数学符号；运算符号
原声例句
VOA Standard 2015年3月合集
PBS趣味科普
For starters, X wasn't even a letter a few thousand years ago, let alone a mathematical symbol.
首先，几千年前，X 甚至不是一个字母，更不用说数学符号了。
VOA Special 2015年3月合集
Penny's clothing is unusual because it has images in the shape of the mathematical symbol pi.
Penny 的衣服很不寻常， 因为它有数学符号 pi 形状的图像。
华研专八听力
When written using mathematical symbols, the differences are obvious because " for all" and " there exists" are reversed.
当用数学符号书写时，差异是明显的，因为" 所有" 和" 存在" 是相反的。
华研专八听力
Unfortunately the rules are more difficult to follow when the language of discourse is English instead of mathematical symbols.
不幸的是，当话语语言是英语而不是数学符号时，规则就更难遵循了。
《金融时报》 Podcast
There are terms like convexity and duration and there are mathematical symbols, but people don't really use those very much on a day-to-day basis.
其中有凸度、持续时间等术语以及数学符号，但人们在日常生活中并不经常使用它们。
2009 ESLPod
The " number pad" is a small, usually square or rectangular part of a keyboard that has just numbers as well as a few mathematical symbols.
“数字键盘” 是键盘上一个很小的部分，通常是正方形或长方形， 只有数字和一些数学符号。
中文百科
数学符号表 List of mathematical symbols
（重定向自Mathematical symbol）
这是一个未完成列表。欢迎您编辑内容并列明来源。数学中，有一组常在数学表达式中出现的符号。数学工作者一般熟悉这些符号，所以使用时不一定会加以说明。下表列出了很多常见的数学符号，并附有名称、读法和应用领域。第三栏给出一个非正式的定义，第四栏提供简单的例子。
注意，有时候不同的数学符号有相同含义，而有些数学符号在不同的语境中会有不同的含义。
英语百科
List of mathematical symbols 数学符号表
（重定向自Mathematical symbol）
- This list is incomplete; you can help by expanding it.
This is a list of symbols found within all branches of mathematics to express a formula or to represent a constant.
When reading the list, it is important to recognize that a mathematical concept is independent of the symbol chosen to represent it. For many of the symbols below, the symbol is usually synonymous with the corresponding concept (ultimately an arbitrary choice made as a result of the cumulative history of mathematics), but in some situations a different convention may be used. For example, depending on context, the triple bar "≡" may represent congruence or a definition. Further, in mathematical logic, numerical equality is sometimes represented by "≡" instead of "=", with the latter representing equality of well-formed formulas. In short, convention dictates the meaning.
近义、反义、联想词
近义词
n.character, grapheme, graphic symbol
英英词典
mathematical symbol n.
- a character that is used to indicates a mathematical relation or operation