Over-the-air; wireless transmission or broadcast

• Remote software update delivered via network

空中传输；无线广播

• 通过网络推送的远程软件更新

Operational transconductance amplifier; voltage-controlled current source IC

• Used in analog signal processing

运算跨导放大器；电压控制电流源集成电路

• 用于模拟信号处理

Online travel agency or agent; web-based travel booking service

在线旅行社或代理；基于网络的预订服务

On-time arrival; punctual arrival performance metric

准点到达；衡量准点率的指标

Optical tube assembly; telescope tube and optics without mount

光学筒组件；仅含望远镜筒和光学件不含支架