Operation era经营时代operationn.操作；运转；经营；行动；手术；运算；生效；（复）运筹学operation performance经营业绩operation after games赛后利用Operation Overlord.n.霸王行动（第二次世界大战时诺曼底登陆的代号）operation instruction使用说明书operation-amplifier运算放大器operation cost system经营成本制度Operation on clitoris阴蒂手术Operation temperature工艺温度operation acknowledge操作应答Operation on bronchus支气管手术