Plesiochronous Digital Hierarchy PDH
plesiochronous digital hierarchy
准同步数字系列
接近同步数字阶层
准同步数字系列(PDH)
近乎同步数位阶层
SCSAsynchronous digital hierarchy
SCSIsynchronous digital hierarchy
SDH Synchronous digital hierarchy
Synchronous Digital Hierarchy
同步数字系列SDH
同步数字体系
同步数位阶层
同步数字序列
同步数字系列
同步数字系列(SDH)
Synchronous Digital hierarchy Cross-Connect SDXC
synchronous digital hierarchy SDH
光同步数字传输网
同步数字系列
同步数字体系
同步数字序列
synchronous digital hierarchy transport network
Synchronous Digital Hierarchy， SDH
Digital 8 tape Digital 8
Digital Archived Digital Publish
Digital In-Analog Out Digital Audio Equipment
digital province and digital city
Digital Radiography Digital Radiograph
Digital Selective Calling Digital Selective Calling
Digital Signal Level 0- Digital Signal Level 3 DS0-DS3
digital theater systems digital surround
Digital Video and Digital Audio