工学 〔智能空管〕 释 unmanned aircraft; UA 无人驾驶航空器 没有机载驾驶员操控，通过双向传输指挥与控制数据链路进行飞行活动的遥控驾驶或者自主驾驶的航空器。不包括航空模型、无人驾驶自由气球等。又称远程驾驶航空器。
网络与数据通信 网络应用 释文 mail user agent, user agent, UA 邮件用户代理
- road materials
- road mileage valuation
- road milling machine
- road mixing method
- road mobile launch
- road motorcycle racing
- road network
- road network planning
- road network structure
- road of nationwide fitness
- road on saline zone
- road on soft clay ground
- road parking
- road passenger transportation
- road passenger transport terminal
- road pavement cleaning equipment
- road pavement structure health monitoring system
- road plane crossing facilities
- road plane design
- road planting
- road pricing
- road profile design
- road protection forest
- road protection greenbelt
- road race of Summer Paralympics