split variometer

例句：

1. 1. The split variometer is used to measure the intensity of light in different wavelengths.
   分光计用于测量不同波长的光强度。
2. 2. The scientist used a split variometer to study the properties of matter at different temperatures.
   科学家使用分光计研究物质在不同温度下的性质。
3. 3. The split variometer was used to detect the presence of certain chemicals in the sample.
   分光计被用来检测样品中特定化学物质的存在。