理学 局域网 释 Ethernet 以太网 一种在逻辑上采用总线型拓扑，并基于载波侦听多路访问/冲突检测（carrier sense multiple access/collision detection，CSMA/CD）协议的局域网技术。
网络与数据通信 有线网络 释文 Ethernet 以太网
- the United States - China Bilateral World Trade Organization Agreement
- The United States of America National Park System
- The Unity
- The Universal Daily News
- The Universal Phonetic Symbol Set in China GF 3007—2006
- The Universal Progressive Journal
- The Universals Archive
- The Universities’Alliance Across The Strait On Cultural Creative Industries Research
- The university of Chicago library（UCL）
- The University of Hong Kong Libraries
- The University of Manchester, UK
- The University of Warwick
- The Unknown Soldier
- The Unlawful Justice Squad
- The Unmatchable
- the unmber of foreign direct investment contract enterprises (projects)
- the unstable energy of an atmosphericlayer
- the upper troposphere and the lower stratosphere
- The Urban Institution model
- the Urban Planning of Singapore
- The Urgency of Changing the World
- the usage of catalyst
- The U.S. Department of Agriculture’s National Invasive Species Information Center
- The Uses of Literacy: Aspects of Working-Class Life
- The US Long Term Ecological Research Network