工学 通信系统 释 public switched telephone network，PSTN 公用交换电话网 进行交互型话音通信、开放电话业务的公众网。是一种全球语音通信电路交换网络。
网络与数据通信 协议体系与组成结构 释文 public switched telephone network 公用交换电话网
- Jacobi limit
- Jacobi matrix
- Jacobi method
- Jacobin Club
- Jacobi necessary condition
- Jacobi operator
- Jacobi-Perron algorithm
- Jacobi polynomial
- Jacobi polynomials
- Jacobi principle
- Jacobi problem
- Jacobi quadrature
- Jacobi rotation matrix
- Jacobi scheme
- Jacobi's ellipsoid
- Jacobi signature criterion
- Jacobi's integral
- Jacobi's triple product identity
- Jacobi symbol
- Jacobi system
- Jacobi tensor
- Jacobi theorem
- Jacobi theta-function
- Jacobi transform
- Jacobi transformation