ionium. oxforddictionaries.com. [2018-01-30]. (原始内容存档于2018-01-30). Early 20th century. From ion + -ium. With the semantic motivation, compare quot. 1907.
ionium. oxforddictionaries.com. [2018-01-30]. (原始内容存档于2018-01-30). Early 20th century. From ion + -ium. With the semantic motivation, compare quot. 1907.