effective neutron lifetime

例句：

1. 1.The study found that the effective neutron lifetime of the material was significantly reducedby the addition of a small amount ofsalt.
   研究发现，加入少量盐后，材料的有效中子寿命显著降低。
2. 2. Theresearcher used a new technique to measurethe effective neutron lifetime of thesample.
   研究者使用一种新的技术来测量样品的有效中子寿命。
3. 3. The experiment aimed todetermine the effective neutron lifetime ofthe substance under different conditions.
   实验旨在确定物质在不同条件下的有效中子寿命。