Bechstein photometer

例句：

1. 1. The Bechstein photometer is used to measure the intensity of light in a laboratory setting.
   贝塞尔光度计用于实验室环境下测量光的强度。
2. 2.The Becker spectrophotometer was used to analyze the chemical composition of the sample.
   贝克尔分光光度计被用来分析样本的化学成分。
3. 3. The Becquerel photometer was used to detect radiation from the sun during the day.
   贝塞尔光度计在白天用于检测太阳辐射。