digital subscriber line造句

1、Presently, Asymmetric Digital Subscriber Line wideband technique is paid attention to extremely.
目前，非对称数字用户环路ADSL宽带技术倍受关注。

2、A Study of High-bit-rate Digital Subscriber Line (HDSL)Technology
高比特率数字环路技术

3、Very-high-speed digital subscriber line is the fastest access technology of the xDSL family.
甚高速数字用户线（VDSL）是数字用户线（DSL）家族中速率最高的接入方式。