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 length of the oestrus cycle is normally 21 days and occurs regularly until the sow or gilt becomes pregnant. Gilts tend to have a shorter cycle of 18â20 days. Gilts. When oestrus is approaching, there is increased activity, and also swelling and reddening of the vulva.