OSNR光信噪比OSabbr.操作系统=（Operating System）oscilaltion combustion振荡燃烧oscillating granulator[机]振动碎粒机oscillating viscometer摆动黏度计oscillator measurement振动测量osmium-tungsten lamp锇钨灯Oscillatoria limnetican.沼泽颤藻osegood-Haskins test奥-哈二氏试验oscillatory shear flow振荡剪切流oscillatory extinction波状消光os metacarpale tertium第三掌骨