1)  UMB
UMB
1.
Based on analyzing the development status of the various wireless communication technologies in 2007 and the requirements of communication market in the future, the author puts forward the prospects of the mobile communication and broadband wireless access technologies as well as their convergence, including WiMAX, TD-SCDMA, WCDMA, HSPA, LTE, UMB, 802.
重点讨论了WiMAX、TD-SCDMA、HSPA、LTE、UMB、802。
2.
B and UMB,in which it expounds emphatically the physical layer superframe structure in UMB system.
B和第二阶段标准UMB,并重点阐述了UMB系统物理层超帧结构。
2)  UWB SAR
UMB-SAR
3)  NBA-UM
NBA-UM
1.
The NBA-UM (nonlinear buckling analysis-update matrix) method is proposed for the dynamic analysis of membrane wrinkles,and the study on the vibration characteristics of the membrane.
在此基础上提出了褶皱薄膜动态分析的NBA-UM(nonlinear buckling analysis-update matrix)分析方法,分析了褶皱薄膜振动特性。
4)  UML-BD
UM-BD
5)  LIM domain
UM结构域
6)  Um interface
Um接口
1.
In GSM system, the mobile radio interface between Mobile Stations and Base Stations is referred as the Um interface, which can be divided in to Physical Layer, Data Link Layer and Network Layer.
第三、四章分析了移动台(MS)与基站(BS)之间的Um接口,并就其信令层次的划分,详细分析数据链路层和网络层的结构以及信令的提取方法。
参考词条
补充资料:burnt umber
分子式:
CAS号:

性质:用含二氧化锰和碳的褐铁矿为原料,经煅烧而成的天然氧化铁棕。主要成分为Fe2O3,一般含量为52%,MnO2含量为10%,呈深棕色,密度为3.69g/cm3,吸油量为56g/100g,比表面积为87m2/g,细度-325目99.8%。由褐铁矿经煅烧转化为赤铁矿而且使所含碳燃烧,颜色变得明亮,再经研磨、粉碎、分级、混配制成煅棕土颜料。主要用于建筑材料、涂料等作着色剂。

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