Archimedes is famous for the 'Eureka!' moment in his bath, when he realized he could use water displacement to measure volume. The Chinese phrase 阿基米德原理 (Ājīmǐdé yuánlǐ) refers to Archimedes' principle.
memory
The transliteration mimics the Greek pronunciation: 阿基 (Ā-jī) for 'Archi' and 米德 (-mǐdé) for '-medes'.