extension net外延网extensionn.延长；伸展；延期；扩充；观念发展；增强n.电话分机；特别课程n.[计]文件名extension group decision-making可拓群决策extension of meaning in intension内涵延伸extension / iks'tenfen/ n.Extension of Agricultural Function农业功能拓展extension outline of an impression伸展外形extension of the limitation period时效期的延长EXTENSION CHARACTER OF ORDERED SET序集的扩张性质extension by electronic computation电算加密测量法extensional lacustrine basin margin伸展型湖盆边缘extensional combinatorial chemistry广义组合化学