Word · Frequency #8364
pis
圆周率
pis is the plural of pi.
核心释义
The mathematical constant π (≈3.14159), equal to the ratio of a circle's circumference to its diameter.
- 1.
The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
- 2.
Metal type that has been spilled, mixed together, or disordered.
- 3.
pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch).
- 4.
An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265.
- 5.
Piaster.
希腊字母π；皮卡（印刷单位）；皮亚斯特（货币单位）；混杂的铅字；圆周率；[计] 处理器接口
用法In use
To find the circumference of a circle, multiply the diameter by pi.
用法提示：pi在这里用作名词，表示圆周率。
The value of pi is approximately 3.14159.
用法提示：pi作为名词，指圆周率这个常数。
We learned how to use pi in our geometry class today.
用法提示：pi作为名词，指数学常数圆周率。
pi is [number]
表示圆周率时，pi作为单数名词。
Pi is approximately 3.14.
圆周率约等于3.14。
the letter pi
The letter pi is the 16th letter of the Greek alphabet.
字母pi是希腊字母表的第16个字母。
相关词与表达Connections
搭配Collocations
- value of pi
- 圆周率的值
- The value of pi is approximately 3.14159.圆周率的值大约是3.14159。
- calculate pi
- 计算圆周率
- We can calculate pi using various mathematical methods.我们可以使用各种数学方法计算圆周率。
- digits of pi
- 圆周率的位数
- The digits of pi go on infinitely without repeating.圆周率的位数无限延伸且不重复。
- approximate pi
- 近似计算圆周率
- Ancient mathematicians attempted to approximate pi using polygons.古代数学家尝试用多边形近似计算圆周率。
流行文化与引用
学习提示Learner notes
记忆技巧Memory Tip
把"pi"想象成圆形的"派"，吃派时就会想起圆周率π≈3.14。
语境与语域Context & Register
语域：m 常见场景：数学、科学、字母表 该词在不同语境中语体不同，数学和科学语境中多为中性或正式，字母表语境中中性，故整体标记为混合。
语法说明Grammar Note
表示圆周率时通常不可数；表示希腊字母时可数，复数形式为pis
发音与拼写Pronunciation & Spelling
Words like 'pie', 'by', 'sky', 'high' rhyme with 'pi' (all have /aɪ/ sound). However, 'pin' and 'pit' are lookalikes with a short 'i' sound (/ɪ/), so they do not rhyme.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.