工学 红外光学 释 infrared optics 红外光学 研究红外辐射的产生、传输、接收、信号转换、信息处理及应用的科学和技术问题。 理学 〔光的应用分支〕 释 infrared optics 红外光学 光学的一个分支，主要研究红外辐射在物质中的激发、传输及接收，物质中红外光到电的转化过程，电到红外光的转化过程，以及红外光之间、红外光与可见光之间的相互转化过程。
- 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
- the US NationalInstitute of Science and Technology database
- The Uyghurs in Central Asia
- the vacuum (aerification) high temperature furnace used for testing machine
- The Vagabond