OSNR光信噪比OSabbr.操作系统=（Operating System）osmotic pressure gauge渗压计os cuneiforme secundum第二楔骨oscillatory occurrence振荡现象Oscillatoria homogenean.匀质颤藻Oscillatoria splendidan.灿烂颤藻oscillating air shaker断续气流式抖动器oscillating hay loader摆动式装干草机oscillating controller振荡控制器oscillating transducer振荡换能器oscillating technology振荡技术