Glossary R
Deutsch: Gummi / Español: Caucho / Português: Borracha / Français: Caoutchouc / Italiano: Gomma /
Rubber refers to a material that is capable of recovering from large deformations quickly and forcibly, and can be, or already is, modified to a state in which it is essentially insoluble (but can swell) in a boiling solvent such as benzene, methyl ethyl ketone or ethanol toluene azeotrope.
Deutsch: Atemwegs / Español: Respiratorio / Português: Respiratório / Français: Respiratoire / Italiano: Respiratorio /
In an industrial or manufacturing context, the term "respiratory" may refer to equipment or systems designed to protect workers from inhaling harmful substances or particles that may be present in the air.
The term roofer (also roof mechanic, roof carpenter) refers to a construction worker who specializes in the construction and maintenance of the roof of a structure. Roofers may be classified into four different types, depending on their specialty.
Deutsch: Recycling / Español: Reciclaje / Português: Reciclagem / Français: Recyclage / Italiano: Riciclaggio /
Recycling makes reference to the process of collecting, sorting, cleansing, treating and reconstituting materials that would otherwise become waste, and returning them to the economic stream as raw materials for new, reused or reconstituted products.
Radio broadcasting broadcasting, transmission of sound or images to a large number of receivers by radio. In the United States the first regularly scheduled radio broadcasts began in 1920 at 8XK (later KDKA) in Pittsburgh
radio, transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially to the radio receiver.
Deutsch: Rückstand / Español: Residuo / Português: Resíduo / Français: Résidu / Italiano: Residuo /
Residue refers to any substance, including metabolites, remaining in livestock at time of slaughter or in carcass tissues after slaughter as the result of treatment or exposure of the livestock to a pesticide, organic or inorganic compound, hormone, hormonelike substance, growth promoter, antibiotic, anthelmintic, tranquilizer, or other therapeutic or prophylactic agent.
Deutsch: Felsig / Español: Roca / Português: Rocha / Français: Roche / Italiano: Roccia /
Rock is the source of natural material from which crushed stone, sand, and gravel are made; the rock most suitable for making good aggregates.