41. Tests were made at five spacing distances " " from the orifice . 42. The deagglomeration potential of various airborne nanomaterials can be also studied using critical orifices . 43. The semen-containing instrument is placed 2 4 cm into the vaginal orifice . 44. Fire sprinklers can be automatic or open orifice . 45. Open orifice sprinklers are only used in water spray systems or deluge sprinklers systems. 46. When Gwar was first formed, their drummer was a character named Hans Orifice . 47. The flow of real gases through thin-plate orifices never becomes fully choked. 48. In addition, it opens the pharyngeal orifice of the pharyngotympanic tube during swallowing. 49. Forceful fish-hooking involves a high risk of permanent facial or orifice damage. 50. Rosette and lower pitchers are broadly ovoid throughout, narrowing somewhat towards the orifice .