fission threshold

例句：

1. 1.The discovery of this new material has raised the fission threshold for nuclear reactions.
   这种新材料的发现提高了核反应的裂变阈值。
2. 2. The team was able to lower the fission threshold by optimizing their experimental conditions.
   团队通过优化实验条件，降低了裂变阈值。
3. 3.The research on the fission threshold is crucial for understanding the behavior of radioactive materials.
   研究裂变阈值对于理解放射性材料的行为至关重要。