TIG welding. n. 1. (General Engineering) tungsten-electrode inert gas welding: a method of welding in which the arc is maintained by a tungsten electrode and shielded from the access of air by an inert gas.
The blade of the classic Roman stabbing sword, the gladius, was only some two feet long, though in the twilight years of the empire the gladius gave way to the spatha, the long slashing sword of the barbarians. Read More. in tactics: The legion. ...as a team.
The proestrus is relatively long at 5â7 days (9 days), while the estrus may last 4â13 days, with a diestrus of 60 days followed by about 90â150 days of anestrus. Female dogs bleed during estrus, which usually lasts from 7â13 days, depending on the size and maturity of the dog.