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for professional electrical installation. the rolled-in edges of the rails protect assemblers as well as cables and wires from injuries during electrical installation. d longitudinal and transverse embossing arranged in the floor significantly increases longitudinal and transverse rigidity and stability...
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and mathematician oliver heaviside , who patented the design in that year (british patent no. ). [ ] coaxial cable is a type of transmission line , used to carry high frequency electrical signals with low losses. it is used in such applications as telephone trunklines, broadband internet networking cables...