例句與造句

1. Hdsl uses two twisted copper pairs to achieve two - way rate symmetric communications ; sdsl is similar to hdsl in function , but only needs one twisted copper pair in providing rate symmetric services ; idsl ( isdn dsl ) provides 128 kbps two - way rate symmetric services
   速率對稱型的xdsl有idsl 、 hdsl 、 sdsl ( singlelinedsl ) 、 hdsl2等多種形式， hdsl采用2對雙絞銅線實現(xiàn)雙向速率對稱通信。 sdsl的功能與hdsl相同，但僅用一對銅線即可提供速率對稱型通信。 idsl （ isdndsl ）提供128kbits雙向速率對稱型通信業(yè)務(wù)。
2. It's difficult to find two-way rate in a sentence. 用two-way rate造句挺難的