单词	lithographing
释义	同lithograph
随便看	operation-- pulse-plusd-c operation ralegh operation, random operation-- random operation range operation rate operation ratio operation readiness review operation readiness review (orr) operation record operation redundancy operation regeneration cycle operation register operation register--or operation register，or operation reliability operation report operation request operation research operation research--operations analysis operation research {=or} operation research (or) operation research {=or} operation reserve operation, reservoir