英语词汇“pi-mesons”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词

pi-mesons

释义

pi¹ /pī or pē/

noun

The sixteenth letter (Π, π) of the Greek alphabet, corresponding to the Roman P
As a numeral, πˈ = 80, ˌπ = 80000
A symbol for the ratio of the circumference of a circle to the diameter, approx 3.14159 (mathematics)

ORIGIN: Gr pei, pī

pi- (or π-)meson noun

(also called pion) the source of the nuclear force holding protons and neutrons together (physics)

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