Laboratory centrifuge. A laboratory centrifuge is a piece of laboratory equipment, driven by a motor, which spins liquid samples at high speed. There are various types of centrifuges, depending on the size and the sample capacity.
In American football, each team is allowed 11 men on the field during a play, for a total of 22 players plus the officials.  If there are more than 11 players on the field foâ¦r a play, the team with too many players may be assessed a 5-yard penalty and any play that occurred may be nullified (at the discretion of the opposing team).
Teams may have up to 18 players, of which 11 can be on the field at one time. Only three substitutes may be used per game. Australian Rules Football. There are 22 players on a team, of which 18 may be on the field at any time. There is no limit on substitutions. Gaelic Football. There may be up to 30 players on a team, only 15 of which may take the field at any time. Only 5 substitutes can be made per game. Rugby Football â League. There may be up to 17 players in a team, of which 13 may be on the field. There is no limit on substitutions.