closed die封闭模,闭合模,模锻模,闭式冲模closedadj.关闭的；封闭的；停业的动词close的过去式和过去分词.closed polygon of force闭合力多边形closed instruction loop闭合指令循环回路Closed Queuing Networks闭排队网络closed queueing network闭合排队网络Closed abdominal trauma腹部合伤Closed Colles' fractureclosed-loop ozonation闭环臭氧化Closed frequent itemset频繁闭项集closed and preservative封闭保守closed on-line system并网系统