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。

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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。

youdao