upgrade：upgrade
USB20接口：USB2.0 interface
USB接口技术：interface technology of universal serial bus
USB118A：USB118A
UML政策民意：UMl policy application & public opinion
URL过滤技术：URL filter technology
USB通信程序：USB communication program
UDT-Sat：UDT-Sat
UML-OCL：UML-OCL
USB主机接口：USB host interface
USB设备监控：USB device monitor
UNB数据格式：UNB data format
UC1854B：UC1854B
uC/OS_Ⅱ：MicroC/OS-Ⅱ
u-Japan：u-Japan
Unicast：Unicast
USB SIE：USB SIE
UML建模技术：UML modelling technology
UCB1x00：UCB1x00
UML 顺序图：UML sequence diagram
USB主机控制：USB host controller
UnCover：UnCover
UMB-SAR：UWB SAR
USB通信协议：USB protocol
UML概要文件：UML outline document
UNION查询：UNION query
USB设备驱动：USB device driver
UDP/TCP：UDP/TC
uc/os-2：uc/os-2
UHV/CVD：UHV/CVD
UC-OGSA：UC-OGSA
UHF无线通信：UHF radio communication
UVW贴图命令：UVW
UCONABC：UCONABC
UNIX套接字：UNIX Socket
UWB脉冲波形：UWB pulse waveform
UML 2.0：UML 2.0
ULN2003：ULN2003
USART模块：USART Module
UCLA图书馆：UCLA library
UC（都市核）：UC(urban core)
UKF滤波算法：unscented Kalman filter
USB 2.0：USB 2.0
U型发射极图形：U-shaped emitter layout
uC/0SII：uC/0S II
UNICORE：UNICORE
U-D分解滤波：U-D factorized filter
UML用例模型：UML using case model
UWB信号设计：UWB signal design
UWB-PAM：UWB-PAM