| That poses a problem with perforation and overlapping other similar stamps on the sheet. |
| If perforation occurs in the stomach or intestines, fever and abdominal pain and tenderness may develop. |
| If no frank perforation is seen, thin barium liquid should be used to identify lacerations that may otherwise be missed. |
| The weight of the metal drum is sufficient to keep it at the depth required and the perforations allow the water to pass through the drum. |
| He varied the pattern of transparency in the ceiling by specifying panels with differently sized perforations. |
| These dots appear like perforations in a three-dimensional surface that, close up, seems to bulge and swell and recede. |
