extor[法] 勒索, 敲诈, 逼供EXTabbr.扩展（=extension）abbr.外面的；外部的（=exterior）abbr.额外的（=extra）exteranl critical damping resist-ance[电] 外部临界阻尼电阻extermination of the antisocial behavior消除反社会行为extensible access control markup language可扩展访问控制标记语言extensible generalized mark-up language扩充广义标记语言exteroceptive salivary conditioned reflex[医] 外感受性唾液条件反射extermination of the antisocial mentality消除反社会心理Extensible Messaging and Presence Protocoln.可扩展消息处理现场协议extirpation of intracranial foreign-body颅内异物取出术Extmcellular signal-regulated MAP kinases细胞外信号调节MAP激酶类extemally pressurized spherical gas bearing静压气体球轴承