chromatography
noun [ U ] chemistry specialized uk/ˌkrəʊ.məˈtɒɡ.rə.fi/ us/ˌkroʊ.məˈtɑː.ɡrə.fi/
色谱分析法（一种识别混合物中所含成分的科学方法，原理是让液态或气态混合物流过某一媒介（如纸张），当中的不同成分会以不同速度流过该物料）
a scientific method of finding what separate chemicals are in a substance by passing it through a material such as paper