What does "FB" mean?

"? FB "has many meanings, such as online game terms, audio player terms, optical communication terms, iron bacteria terms, and the abbreviation of Drivers Association.

1, feedback (audio player)

Foobar2000 is a free software developed by Peter Pawlowski, and it is a multifunctional audio player. Besides playing, foobar2000 also supports the functions of generating media library, converting media file encoding, extracting CD, etc. This is a powerful tool. In terms of playback function, foobar2000 can play automatically and seamlessly, and it is excellent in playing lossless audio.

2.FB (online game terminology)

FB is the abbreviation of First Blood, which comes from the RPG map dota of Warcraft, meaning the first head of the whole game (the hero is killed or killed for the first time). In addition, it also refers to copy (fuben): instance, which is called copy area-instance area.

3. Optical communication terminology

Fb refers to the back focal length in optics. For example, in a plano-convex lens, Fb refers to the distance from the plane to the focus, and in a biconvex lens, Fb refers to the distance from any mirror to the focus.

4. Iron bacteria

Iron bacteria are a kind of bacteria that live in ponds, lakes, hot springs and other water bodies with high ferrous ion concentration, can oxidize ferrous salts into trivalent iron compounds, and can use the energy generated in this oxidation process to assimilate carbon dioxide for growth.

5.FB (abbreviated as Cheyouhui)

The origin of "FB" cannot be traced back. FB organization has no fixed leadership. Whoever initiates is the leader. When he has a good idea, he sends a call post on the Internet, and then people who are interested respond. Every FB, there are always seven or eight cars, a dozen or twenty people, and the team echoes back and forth, which is very spectacular.

Baidu Encyclopedia -FB (Optical Communication Language)

Baidu encyclopedia -FB (iron bacteria)