物理当量伦琴
Parker \Park"er\, n. The keeper of a park. --Sir M. Hale.
Parker n 1: United States saxophonist and leader of the bop style of jazz (1920-1955) [syn: {Charlie Parker}, {Yardbird Parker}, {Bird Parker}, {Charles Christopher Parker}] 2: United States writer noted for her sharp wit (1893-1967) [syn: {Dorothy Parker}, {Dorothy Rothschild Parker}]