USB双向通信：USB bi-directional communication
URL直接访问：URL direct access
UD-Tree：UD-Tree
USB限流开关：USB power switch
USB设备应用：application of USB device
UPS监测系统：UPS monitor system
UHF下变频器：UHF downconverter
Ubitron：Ubitron
UV激光微线钻：UV Laser "microline drill
USSD服务器：USSD Server
UDPLite：UDP Lite
UV增强型探测：ultraviolet enhanced detection
UTC（SU）：UTC(SU)
Undo表空间：Undo tablespace
UDP传输服务：UDP transmission service
USB设备阵列：USB device array
USB数字电话：USB digital phone
UML管理系统：UML management system
U型液体阻尼器：tuned liquid column damper
UML通用建模：Unified Modeling Language(UML)
UMTS核心网：UMTS core network
UML描述方案：UML description scheme
UDP流量控制：UDP flow control
USB总线驱动：USBD(USB Driver)
ULSI铜互连：copper interconnection in ULSI
UNIX系统V：UNIX SYS V
USM ARC：USM ARC
UDP报文协议：intercept
UDP传输控制：transfer control based on UDP
UNITY逻辑：UNITY Logic
USB接口模块：USB interface module
Usher曲线：Usher curve
UCD数码相机：UCD digital camera
UCPmRNA：UCP mRNA
U5snRNP：U5snRNP
u0-凹凸算子：μ0-concave-conves
UCAC2星表：UCAC2
U-Pb年代学：U-Pb dating
UF胶固化时间：Curing time of UF
usp14基因：usp14 gene
u-p插值近似：u-p interpolation approximations
ULHGA算子：ULHGA Operator
u_0-凹算子：u_0-concave operator
U（1）对称性：U(1) Symmetry
Ushio猜想：Ushio conjecture
uninorm：uninorms
UV-OLED：ultraviolet-OLED
U型价值链模型：U value china model
UWB电磁脉冲：UWB electromagnetic pulse
Uq（Sl2）：U_q(sl_2)