Hammett scale

例句：

1. 1. The Hammett scale is used to measure the intensity of a substance's color.
   哈米特刻度用于测量物质颜色的强度。
2. 2. The Hammett scale is commonly used in environmental science to assess the toxicity of pollutants.
   哈米特刻度在环境科学中常被用来评估污染物的毒性。
3. 3. The Hammett scale is based on the relative molecular mass of the compounds involved in the reaction.
   哈米特刻度是基于参与反应化合物的相对分子质量建立的。