A quantum number equal to twice the average electric charge of a particle multiplet or,equivalently,to the sum of the strangeness and the baryon number.是什么意思_A quantum number equal to twice the average electric charge of a particle multiplet or,equivalently,to the sum of the strangeness and the baryon number.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句