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Terms for subject Environment (7358 entries)
radioactive tracer technique 放射性指示剂技术
radioactive waste (Any waste that emit radiation in excess of normal background level, including the toxic by-products of the nuclear energy industry) 放射性废料
radioactive waste management (The total supervision of the production, handling, processing, storage and transport of materials that contain radioactive nuclides and for which use, reuse or recovery are impractical) 放射性废料管理
radioactive-convective model 辐射一对流模式
radioactivity (The property possessed by some atomic nuclei of disintegrating spontaneously, with loss of energy through emission of a charged particle and/or gamma radiation) 放射性
radioelement (An element that is naturally radioactive) 放射性元素
radionuclide (A nuclide that exhibits radioactivity) 放射性核
radon (A radioactive gaseous element emitted naturally from rocks and minerals where radioactive elements are present. It is released in non-coal mines, e.g. tin, iron, fluorspar, uranium. Radon is an alpha particle emitter as are its decay products and has been indicted as a cause of excessive occurrence of lung cancer in uranium miners. Concern has been expressed at radon levels in some housing usually adjacent to granite rocks or old tin mining regions)
rag (Discarded textile waste, either post-consumer waste or pre-consumer waste, such as manufacturing process scraps) 破布
rail traffic (The movement and circulation of vehicles transporting goods and people on railroad systems) 铁路交通
rail transport (Transportation of goods and persons by railway) 铁路运输
railroad vehicle 铁路车辆
railway (A permanent track composed of a line of parallel metal rails fixed to sleepers, for transport of passengers and goods in trains) 铁路
railway network (The whole system of railway distribution in a country) 铁路网络
railway station (A place along a route or line at which a train stops to pick up or let off passengers or goods, especially with ancillary buildings and services) 火车站
rain (Precipitation in the form of liquid water drops with diameters greater than 0.5 millimeter) 下雨
rain erosion mapping 雨水侵蚀绘图
rain erosion susceptibility 雨水侵蚀易感性
rain erosivity 雨水侵蚀性
rain forest (A forest of broad-leaved, mainly evergreen, trees found in continually moist climates in the tropics, subtropics, and some parts of the temperate zones) 雨林