网络与数据通信 无线网络 释文 digital advanced mobile phone system, D-AMPS 数字式高级移动电话系统
- United States Sports Academy
- United States Steel Corporation
- United Suvadive Republic
- United Synagogue of Conservative Judaism
- United Technologies Corporation
- United World Wrestling
- unit element
- unit elongation
- uniterminal axis
- uniterm indexing
- uniterm language
- unit evaluation plan
- unit field
- unit filter
- unit flexo printing press
- unit fraction
- unit function
- unit group
- unit hydrograph
- unit hypercube
- unit ideal
- unit idele
- unit impulse function
- unit impulse response
- unit injector system