The 50-50 grind is the first grind trick that most skaters learn, and is a great basic skateboard trick to learn. The 50-50 grind is where the skater grinds the ledge or rail with both trucks. The nice thing about the 50-50 is that you can learn to do it on a curb, which is a pretty safe and easy place to practice.
dBi is decibels relative to isotropic radiator which means that the radiator (an antenna, usually) sends the signal equally strong in all directions, including above and below. Such a radiator would have 0 dBi.(I have yet to see an antenna like that -- it may exist only in math theory.).Bi is decibels relative to isotropic radiator which means that the radiator (an antenna, usually) sends the signal equally strong in all directions, including above and below. Such a radiator would have 0 dBi. (I have yet to see an antenna like that -- it may exist only in math theory.).
Ski-Doo SDI-a quite different and more economical route to low two-stroke emissions and fuel consumption. SDI stands for Semi-Direct Injection, and it describes a system by which fuel is injected, not into the combustion chamber, but into the fast-moving air streams in the rear transfer ports.DI stands for serial digital interference. It is a video interface used within broadcast environments and supports both SD and HD signals. It runs on a single co-ax cable wit â¦ h BNC terminations.