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.
超荷一个量子量，等于一个粒子多重线谱的平均电极；或者相当于量子数和重子的数量的总和。
2
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.