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Find the centroid of the region bounded by the curves.
Highway Train Combination
A vehicle configuration combining a highway tractor with one or more trailers, designed to optimize cargo transportation on roadways.
Converter Dolly
A single axle coupling assembly with a frame, drawbar, and fifth wheel that converts a semitrailer into a full-trailer.
Drawbar
The device used to connect a trailer tongue to either a pintle hook or a ball hitch.
Pintle Hook
A type of towing hitch used to connect trailers or other towable equipment to a vehicle or equipment, characterized by a hook-and-loop configuration.
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