light-compass reaction

例句：

1. 1.The light-compass reaction is used to measure the intensity of light.
   光度计反应用于测量光的强度。
2. 2. In this experiment, we used a light-compass reaction to determine the concentration of a solution.
   在这个实验中，我们使用光度计反应来确定溶液的浓度。
3. 3.The light-compass reaction has been widely used in environmental monitoring.
   光度计反应在环境监测中被广泛应用。