Both! Ultrasound Tech, or Technician, is the same as Sonographer. You may also hear the term Diagnostic Medical Sonographer as well as Ultrasonographer.Each of these titles refers to the profession of operating ultrasound machines, which produce images used to diagnose and treat patients.oth! Ultrasound Tech, or Technician, is the same as Sonographer. You may also hear the term Diagnostic Medical Sonographer as well as Ultrasonographer.
Flip-flop hub. Flip-flop hubs, also called double-sided hubs, are rear bicycle hubs that are threaded to accept fixed cogs and/or freewheels on both sides. There are several different types of flip flop hubs available for different applications. Their main purpose is to allow changing between two different size gear ratios on one rear wheel without the added complications of a derailleur or internal hub gear, or between a fixed and freewheeling option.
A pair of flip-flops being worn. Flip-flops are a type of open-toed sandal, typically worn as a form of casual wear. They consist of a flat sole held loosely on the foot by a Y-shaped strap or thong that passes between the first and second toes and around both sides of the foot. The name flip-flop originated from the sound made by the slapping of the sole, foot and floor when walking.