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| Terms for subject Environment (7397 entries) |
| 候鸟 | migratory bird (Birds which migrate in a body) | |
| 业务 | branch of activity (A specialized division of a business or other organization) | |
| 会计学 | accounting (Method of recording all the transactions affecting the financial condition of a business or organization) | |
| 会计系统 | accounting system (The system of setting up, maintaining, and auditing the books of a firm and of analyzing its financial status and operating results) | |
| 多氏最小养分桶 | Dobeneck's tonne of minimum nutrients | |
| 多次使用容器 | returnable container (Container whose return from the consumer or final user is assured by specific means (separate collection, deposits, etc.), independently on its final destination, in order to be reused, recovered or subjected to specific waste management operations) | |
| 多次胁迫 | multiple stresses | |
| 多氯三联苯 | polychlorinated terphenyl (Compounds consisting of three benzene rings linked to each other in either ortho, meta or para positions and substituted with chlorine atoms) | |
| 多氯联苯 | polychlorinated biphenyl (PCBs are a family of chemical compounds which do not exist in nature but which are man-made. Commercial mixtures are clear, pale yellow liquids, manufactured by the replacement of hydrogen atoms on the biphenyl molecule by chlorine. Because of their physical properties, PCBs are commonly found in electrical equipment which requires dielectric fluid such as power transformers and capacitors, as well as in hydraulic machinery, vacuum pumps, compressors and heat-exchanger fluids. Other uses include: lubricants, fluorescent light ballasts, paints, glues, waxes, carbonless copy paper, inks including newspapers, dust-control agents for dirt roads, solvents for spreading insecticides, cutting oils. PCBs are stable compounds and although they are no longer manufactured they are extremely persistent and remain in huge quantities in the atmosphere and in landfill sites. They are not water-soluble and float on the surface of water where they are eaten by aquatic animals and so enterthe food chain. PCBs are fat-soluble, and are therefore easy to take into the system, but difficult to excrete) | |
| 多氯二苯并呋喃 | polychlorinated dibenzofuran (A family containing 135 individual, colorless compounds known as congeners with varying harmful health and environmental effects. They are produced as unwanted compounds during the manufacture of several chemicals and consumer products such as wood treatment chemicals, some metals, and paper products; also produced from the burning of municipal and industrial waste in incinerators, from exhaust of leaded gasoline, heat, or production of electricity. They are hazardous to the respiratory system, gastrointestinal system, liver, musculoskeletal system, skin and nervous system; and are toxic by inhalation, ingestion, and contact. Symptoms of exposure include frequent coughing, severe respiratory infections, chronic bronchitis, abdominal pain, muscle pain, acne rashes, skin color changes, unexpected weight loss, nonmalignant or malignant liver disease) | |
| 多谱扫描器 | multispectral scanner (A remote sensing term referring to a scanning radiometer that simultaneously acquires images in various wavebands at the same time. A multispectral scanner can be carried aboard an aircraft or satellite. The Landsat multispectral scanner records images in four wavebands of visible and near infrared electromagnetic radiation to enable objects with different reflectance properties to be distinguished) | |
| 多样性 | diversity | |
| 多样性指数 | index of diversity | |
| 多机构协调系统 | multiagency coordination system | |
| 多层代谢途径 | tiered metabolic pathway | |
| 多媒体技术 | multimedia technology (Any technical means used to combine text, sound, still or animated images and video in computers and electronic products, often allowing audience interactivity) | |
| 多功能农场 | multifunctional farm | |
| 多环碳氢化合物 | polycyclic hydrocarbon (Hydrocarbon molecule with two or more nuclei; examples are naphtalene, with two benzene rings side by side, or diphenyl, with two bond-connected benzene rings. Also known as polynuclear hydrocarbon) | |
| 多环芳香碳氢化合物 | polycyclic aromatic hydrocarbon (Hydrocarbons containing two or more closed rings of atoms) | |
| 多溴联苯 | polybrominated biphenyl (A chemical substance the composition of which, without regard to impurities, consists of brominated biphenyl molecules) |