isospin造句
        The condition of an exchange force has nothing to do with 
isospin.
交换力的条件与同位旋完全无关.
Isospin is a vector quantity.
同位旋是矢量.
The 
isospin fractionation intermediate ion collisions is studied by using 
isospin dependence quantum molecular dynamics model.
利用同位旋相关的量子分子动力学模型研究了中能重离子碰撞中同位旋分馏过程.