Joly wax block photometer

例句：

1. 1. The Joly wax block photometer is used to measure the absorption of light in materials.
   Joly蜡块光度计用于测量材料对光的吸收。
2. 2. This instrument is essential for analyzing the chemical composition of organic compounds.
   这种仪器对于分析有机化合物的化学成分至关重要。
3. 3. The Joly wax block photometer has been widely used in industrial testing and quality control.
   Joly蜡块光度计在工业测试和质量控制中得到了广泛应用。