semen freezing

• 精液冷冻

semen freezing的用法和样例：

例句

1. During earlier time the study mainly focused on screening and optimizing the cryprotective mediums and freezing methods, which exploited the technique of cryopreservation deeply.
   早期的研究多集中在对冷冻保护剂和冷冻方法的筛选与优化上，为猪精液冷冻保存进行了深入的探索。