exch[经] 交易所EXCn.开挖(激励器；排气关闭)excision repair切补修复excommunicationn.逐出教会；逐出excoriated acne表皮脱落性痤疮, 少女人为痤疮excavatio disci视盘陷凹excentral cable偏心电缆excitovasomotor兴奋血管舒缩excavating hole人工挖孔excitonic phase激子相excretory organ排泄器(官)excitatory type兴奋型