Operaion scope 发射距离

maximum operaion frequency [电子] 最高工作频率

operaion Flashpoint 闪点行动

High-voltage operaion sites 高压电作业

Chief Operaion Officer Europe 姜尔加

Certificate of Hotel Operaion 酒店及旅游管理

operaion sympathetic ncrvous system 交感神经手术

operaion on sympathetic ncrvous system 交感神经手术