photometer head

例句：

1. 1.The photometer head is responsible for measuring the light intensity.
   光度计头部负责测量光线强度。
2. 2.The technician needs to adjust the photometer head to ensure accurate measurements.
   技术人员需要调整光度计头部以确保准确的测量。
3. 3.The photometer head is a crucial component of the spectrophotometer.
   光度计头部是分光光度计的关键部件。