acidimeteryoudaoicibaDictYouDict[acidimeter 词源字典]
"An instrument (or occasionally other means) for measuring the strength of acids; especially (in later use) an electronic device for indicating the pH of a sample", Early 19th cent.; earliest use found in Andrew Ure (1778–1857), chemist. From acid + -imeter, after alkalimeter.[acidimeter etymology, acidimeter origin, 英语词源]