长途 long-distance自动 voluntarily; of one's own ac ...交换机 exchange board; switchboard长途自动交换 toll automatic switching多用途自动交换机 versatile automatic data exchange长途电话自动交换机 automatic toll switching system; trunk automatic exchange自动交换机 automatic exchange; automatic switchboard; automatic switching equipment; automatic switching system; automatic switching unit; automatic telephone switchboard; pabx;private automatic branch exchangea形自动交换机 a type automatic switchboard半自动交换机 automanual switchboard自动交换自动交换机 automatic exchange长途半自动交换 toll service唱片自动交换机 record autochanger电子式自动交换机 electronic dial exchange电子自动交换机 electronic anutomatic exchange; electronic automatic exchage; electronic automatic exchange (eax)公共自动交换机 cax community automatic exchange; community automatic exchange公用自动交换机 community automatic exchange面板型自动交换机 panel type automatic switch board; panel type automatic switchboard农村自动交换机 rax rural automatic exchange升降制自动交换机 panel dial exchange私用自动交换机 private automatic exchange(pax)移动式自动交换机 mobile automatic exchange用户自动交换机 private automatic branch exchange pabx; private automatic branch exchange, pabx专用自动交换机 pax private automatic exchange; private automatic branch exchange; private automatic exchanger自动交换机c接帚 private wiper自动交换机机房 automatic switchroom
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The municipality has an advanced modern communications system , with an optic - fiber transmission network of 3 , 000 kilometers of large capacity and high efficiency , a long - distance automatic exchange capacity of 20 , 000 terminals , electric lines of 30 , 000 and a basic multimedia and high - speed broad - band communications network 现代通信发达,构建了大容量、高效率、长达3000多公里的光纤传输网,长途自动交换机 容量达2万路端,电路3万多条,基本建立了多媒体、高宽带的通信网络。
Last modified time:Wed, 13 Aug 2025 00:29:56 GMT