pure line strain

• 纯系株； 纯系

pure line strain的用法和样例：

例句

1. When a pure line variety is grown at close spacing there is a competition effect.
   当一个纯系品种在密的植距下生长时有一种竞争效应。
2. Crossbred Duroc was not better than pure ones for litter size at birth.
   系间杂交公猪所配母猪的产仔数也与纯系所配母猪的产仔数相近。