Neomycin and Framycetin are not absorbed from the gastrointestinal tract and are thus found in many topical medications such as creams, ointments and eyedrops. They can also be used for gastrointestinal infections.
radio chassis - a chassis for a radio receiver 3. chassis - the skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor automotive vehicle, motor vehicle - a self-propelled wheeled vehicle that does not run on rails
Chassis ground is meant to protect people from shocks. It is a protective ground which is connected to the earth ground. Earth ground is a metal rod really dug deep in ground outside the building to sink current and provide ground zero. Signal ground need not be connected to this, Signal ground is a common return path for the signal.