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pi

美音:[paı ]点这儿播放单词美音发声
英音:[paı ]点这儿播放单词英音发声
[军] Product Improve,产品改进 n. 派(π),圆周率(π)

难易程度:

pi为短语/超纲词汇

词形变化:

名词复数:pis 动词过去式:pied/pied 过去分词:pied/pied 现在分词:piing/pieing 第三人称单数:pies/pies

pi


/paɪ; paɪ/
n
1 the sixteenth letter of the Greek alphabet (, ), represented in English spelling by `p' 希腊字母表的第十六个字母(), 英语拼写中用 p.
2 (geometry 几) symbol () representing the ratio of the circumference of a circle to its diameter (ie 3.14159) 圆周率(即3.14159).

pi


n[U]
[Date: 1800-1900; Origin: From the name of the first letter of Greek periphereia 'distance around a circle']
technical a number that is represented by the Greek letter (兾;) and is equal to the distance around a circle, divided by its width