bead reaction

例句：

1. 1. The bead reaction is a sensitive indicator of the environment's quality.
   珠子反应是环境质量的一个敏感指示器。
2. 2. During the bead reaction experiment, we observed the formation of a new compound.
   在珠子反应实验中，我们观察到了一种新的化合物的形成。
3. 3. The bead reaction was used to study the chemical properties of different materials.
   珠子反应被用来研究不同材料的化学性质。