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同步数位阶层
tóng bù shù wèi jiē céng
Definitions
•
synchronous digital hierarchy
•
SDH
Child Words of 同步数位阶层
数位
shù wèi
同步
tóng bù
步
bù
同
tóng
阶层
jiē céng
数
shuò
位
wèi
同
tòng
层
céng
阶
jiē
数
shù
数
shǔ