管理学 电子政务网络技术 释 integrated services digital network; ISDN 综合业务数字网 实现话音、数据和图像在同一个网络中传输与交换的重要技术，是一种典型的电路交换网络系统。
网络与数据通信 协议体系与组成结构 释文 integrated service digital network, ISDN 综合业务数字网
- tangency condition
- tangency theorem
- tangency transformation
- tangent
- tangent algebra
- tangent amplitude
- tangent at the vertex
- tangent ball
- tangent bifurcation
- tangent bundle
- tangent circles
- tangent coefficient
- tangent condition
- tangent cone
- tangent curve
- tangent cut locus
- tangent cutpoint
- tangent cylinder
- tangent deformation
- tangent developable
- tangent dimension
- tangent elevation
- tangent externally
- tangent field
- tangent flow