VADSL Very high speed ADSL是什么意思

用法例句

Very-high-speed digital subscriber line(VDSL) 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。

This paper presents the key technologies of VDSL and ADSL, and the comparison of these two kinds of DSL technologies in terms of modulation,topology and application circumstances.

文章介绍了非对称数字用户线(ADSL)与甚高速数字用户线(VDSL)的关键技术,并对这两种数字用户线技术从调制技术、拓扑结构和应用环境等方面做了全方位的比较。