Stromgren fourcolour index

例句：

1. 1. The Stromgren four-color index is a widely used tool for color matching in scientific research.
   斯特隆格伦四色指数是科学研究中用于颜色匹配的广泛使用的工具。
2. 2.In the field of color science, the Stromgren four-color index is often used to determine the relative hue differences between colors.
   在色彩科学领域，斯特隆格伦四色指数常被用来测定不同颜色之间的相对色调差异。
3. 3. The Stromgren four-color index has been shown to be more accurate than traditional methods for measuring color differences.
   斯特隆格伦四色指数已被证明比传统的测量方法更准确地测量颜色差异。