| Terms for subject Environment (34443 entries) |
| rayonnement ultraviolet d'origine solaire | ultraviolet radiation | |
| rayonnement ultraviolet d'origine solaire | ultraviolet solar radiation | |
| rayonnement ultraviolet dangereux | dangerous ultraviolet | |
| rayonnement UV-B | UV-B radiation | |
| rayonnements de courte longueur d'onde | short-wave radiation | |
| rayons X | X ray | |
| rayons X | X ray (A penetrating electromagnetic radiation, usually generated by accelerating electrons to high velocity and suddenly stopping them by collision with a solid body, or by inner-shell transitions of atoms with atomic number greater than 10; their wavelength ranges from about 10(-5) angstrom to 10 angstroms, the average wavelength used in research being 1 angstrom) | |
| raz de marée | tide race | |
| raz de marée | seismic sea wave | |
| raz de marée | seismic sea wave (A large seismically generated sea wave which is capable of considerable destruction in certain coastal areas, especially where submarine earthquakes occur. Although in the open ocean the wave height may be less than one meter it steepens to hights of 15 metres or more on entering shallow coastal water. The wavelength in the open ocean is of the order of 100 to 150 km and the rate of travel of a seismic sea wave is between 640 and 960 km/h) | |
| re-remplissage | refilling | |
| reboisement | reafforestation | |
| reboisement | local afforestation (The planting of trees in an area, or the management of an area to allow trees to regenerate or colonize naturally, in order to produce a forest) | |
| reboisement | reforestation (The planting of trees in forest areas which have been cleared. Reforestation has become increasingly important for preventing or reversing environmental degradation and for helping to maximize economic returns on commercially forested lands) | |
| reboisement | restocking | |
| reboisement mixte | mixed afforestation | |
| reboisement à l'échelle locale | local afforestation | |
| reboiser des terres | afforest land | |
| rebord externe de la marge continentale | outer edge of the continental margin | |
| rebut alimentaire | food scrap |