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Oscillation
Oscillation is the variation, typically in time, of some measure as seen, for example, in a swinging pendulum. The term vibration is sometimes used more narrowly to mean a mechanical oscillation but ... > more -
Hydrocarbon
In chemistry, a hydrocarbon is any chemical compound that consists only of the elements carbon (C) and hydrogen (H). They all contain a carbon backbone, called a carbon skeleton, and have hydrogen ... > more -
Civil engineering
In modern usage, civil engineering is a broad field of engineering that deals with the planning, construction, and maintenance of fixed structures, or public works, as they are related to earth, ... > more -
Catalytic converter
A catalytic converter is a device used to reduce the emissions from an internal combustion engine. Most commonly used in an automobile's exhaust system, catalytic converters are now commonly used on ... > more -
Polytetrafluoroethylene
Polytetrafluoroethylene (PTFE) is a fluoropolymer discovered by Roy J. Plunkett (1910–1994) of DuPont in 1938. It was introduced as a commercial product in 1946 and (in an example of a ... > more
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