倾斜投影器 oblique projector
侧弯矫形用斜面手术台 oblique rectifying table with curved side
斜盘式压缩机 oblique tray type compressor
长方盘垫 oblong doily
椭圆形花盆 oblong flower pot
长方片滑石笔 oblong slice slate pencil
椭圆形台布 oblong tablecloth
长方盘 oblong tray
长方盘布 oblong tray cloth
双簧管 oboe
邻溴乙酰替苯胺 o-bromoacetanilide
邻溴苯胺 o-bromoaniline
侧弯矫形用斜面手术台 oblique rectifying table with curved side
斜盘式压缩机 oblique tray type compressor
长方盘垫 oblong doily
椭圆形花盆 oblong flower pot
长方片滑石笔 oblong slice slate pencil
椭圆形台布 oblong tablecloth
长方盘 oblong tray
长方盘布 oblong tray cloth
双簧管 oboe
邻溴乙酰替苯胺 o-bromoacetanilide
邻溴苯胺 o-bromoaniline
邻溴苯甲酸 o-bromobenzoic acid
邻溴硝基苯 o-bromonitrobenzene
邻溴酚 o-bromophenol
邻溴甲苯 o-bromotoluene
毛面玻璃 obscured glass
了望车 observation car
观察目镜 observation eyepiece
观察镜 observation mirror
观察卫星 observation satelite
搜索探照灯 observation searchlight
观测船 observation vessel
观测表 observation watch
黑曜石 obsidian
障碍指示器 obstacle indicator
助产器 obstetric apparatus
牛用助产器械 obstetric apparatus for cattle
分娩椅 obstetric chair
产钳 obstetric forceps
产床 obstetric table
闭塞器 obturator
封闭环 obturator ring
邻脂苯芥 ocaphane
邻羧基偶氮胂 o-carboxyarsenazo
奥卡利纳笛 ocarina
后颅凹牵开器 occiput spreader
限光器 occluder
海底水听仪器 ocean bottom hydrophone instrument
海底地层剖面仪 ocean bottom profiler
海底地震仪 ocean bottom seismograph
海底地貌仪 ocean bottom topographic meter