双绞铜线的英文

例句与用法

1. Adsl , symmetrical dsl ( sdsl ) , high - bit - rate dsl ( hdsl ) , very high dsl ( vdsl ) , and rate adaptive dsl ( radsl ) use intelligent devices similar to network cards at each end of a single twisted - pair copper wire circuit to deliver very high speeds over copper wire for distances ranging from hundreds of feet to 18 , 000 feet
   Adsl （不对称数字用户线） 、 sdsl （对称数字用户线） 、 hdsl （高位速率数字用户线） 、 vdsl （极高速数字用户线）和radsl （速率自适应数字用户线）都使用了与网卡类似的智能装置，它们装在单根双绞铜线的两端，以在几百到18000英尺的距离范围内在铜线上提供极高的传输速度。
2. 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
   速率对称型的xdsl有idsl 、 hdsl 、 sdsl ( singlelinedsl ) 、 hdsl2等多种形式， hdsl采用2对双绞铜线实现双向速率对称通信。 sdsl的功能与hdsl相同，但仅用一对铜线即可提供速率对称型通信。 idsl （ isdndsl ）提供128kbits双向速率对称型通信业务。
3. Using ordinary modem , the data transmission speed under the current existing twisted pair access copper telephone lines network for voice communication is limited to 56kb s , which is totally inadequate for high volume data transmission . even using the adsl technology , the maximum transmission speed can only be increased up 6mb s . to surmount this problem by providing optical network access directly to all users ? home and offices not only involve very high cost but also extremely time consuming engineering work
   现存原来用作话音通讯的双绞铜线电话固网，在利用现时普通的modem情况下，数据传送速度仅为56kb s即使利用较先进的adsl技术，其最高速率亦只有6mb s ，不足以应付高容量资讯的传输然而要做到光纤入户，不但成本高昂，而且工程所需之时间漫长。
4. Using ordinary modem , the data transmission speed under the current existing twisted pair access copper telephone lines network for voice communication is limited to 56kbs , which is totally inadequate for high volume data transmission . even using the adsl technology , the maximum transmission speed can only be increased up 6mbs . to surmount this problem by providing optical network access directly to all users ? home and offices not only involve very high cost but also extremely time consuming engineering work
   现存原来用作话音通讯的双绞铜线电话固网，在利用现时普通的modem情况下，数据传送速度仅为56kbs ；即使利用较先进的adsl技术，其最高速率亦只有6mbs ，不足以应付高容量资讯的传输；然而要做到光纤入户，不但成本高昂，而且工程所需之时间漫长。