photometering

例句：

1. 1. The chemist uses a photometer to measure the concentration of chemicals in the solution.
   化学家使用光度计来测量溶液中化学物质的浓度。
2. 2.The new photometer has been designed to be more accurate and user-friendly.
   这款新型光度计被设计得更加准确和用户友好。
3. 3. In scientific experiments, precise measurements are crucial for obtaining accurate results.
   在科学实验中，精确的测量对于获得准确的结果至关重要。