accumulator bleed down orifice
adjustable orifice
可调喷管
可调注孔
可调孔口
可调流孔
可调孔板
可调隔板
可调节孔
可调喷口
adjustable orifice scrubber
adjustable restrictor orifice
Anastomotic orifice stenosis
Angle of intersection of the exhausting duct orifice with tunnel axis
atrioventricular orifice