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Terms for subject Environment (8061 entries)
dispersion (A distribution of finely divided particles in a medium) 扩散
dispersion calculation (The calculation of pollutant dispersion is based on the use of air dispersion models that mathematically simulate atmospheric conditions and behaviour. Dispersion models can provide concentration or deposition estimates and can be used to evaluate both existing and hypothetical emissions scenarios) 扩散计算
displaced person (Persons who, for different reasons or circumstances, have been compelled to leave their homes) 被迫离家者
disposal of the dead 死者处置
disposal of warfare materials (Disposal of the material remnants of war, which can seriously impede development and cause injuries and the loss of lives and property. The disposal of warfare waste is problematic because it can be highly dangerous, toxic, long-living and requires the utilization of specific and sophisticated technologies, particularly in the case of mines and unexploded bombs which have been left on the war territories) 战争残留物的处置
dissolution (Dissolving of a material) 溶解
dissolved organic carbon (The fraction of total organic carbon (all carbon atoms covalently bonded in organic molecules) in water that passes through a 0.45 micron pore-diameter filter) 溶解性有机碳
dissolved oxygen (The amount of oxygen dissolved in a stream, river or lake is an indication of the degree of health of the stream and its ability to support a balanced aquatic ecosystem. The oxygen comes from the atmosphere by solution and from photosynthesis of water plants. The maximum amount of oxygen that can be held in solution in a stream is termed the saturation concentration and, as it is a function of temperature, the greater the temperature, the less the saturation amount. The discharge of an organic waste to a stream imposes an oxygen demand on the stream. If there is an excessive amount of organic matter, the oxidation of waste by microorganisms will consume oxygen more rapidly than it can be replenished. When this happens, the dissolved oxygen is depleted and results in the death of the higher forms of life) 溶解氧
dissolved particle 溶性粒子
distillation (The process of producing a gas or vapour from a liquid by heating the liquid in a vessel and collecting and condensing the vapours into liquids) 蒸馏
distilling industry (A sector of the economy in which an aggregate of commercial enterprises is engaged in the manufacture and marketing of alcoholic beverages made by a distillation process of vaporization and condensation, such as vodka, rum, whiskey and other related beverages) 蒸馏酒工业
distortion of competition (Article 85 of the EEC Treaty prohibits all agreements between undertakings, decisions by associations of undertakings and concerted practices which may affect trade between member states and which have as their object or effect the prevention, restriction or distortion of competition within the common market. All such arrangements are automatically null and void under Article 85, unless exempted by the Commission pursuant to Article 85. The text of Article 85 is as follows: "1. The following shall be prohibited as incompatible with the common market: all agreements between undertakings, decisions by associations of undertakings and concerted practices which may affect trade between member states and which have as their object or effect the prevention, restriction or distortion of competition within the common market, and in particular those which: (a) directly or indirectly fix purchase or selling prices or any other trading conditions; (b) limit or control production, markets, technical development, or investment; (c) share markets or sources of supply; (d) apply dissimilar conditions to equivalent transactions with other trading parties, thereby placing them at a competitive disadvantage; (e) make the conclusion of contracts subject to acceptance by the other parties of supplementary obligations which, by their nature or according to commercial usage, have no connection with the subject of such contracts) 竞争扭曲
distribution (In an environmental context, the term refers to the dispersion of air pollutants and depends on the type of pollution source (point source, line source, diffuse source), the wind velocity and the wind direction. Distribution can be active or passive) 散布
distribution area (1. The overall geographical distribution of a talon. 2. The range occupied by a community or other group) 分布区域
distribution of assimilates 同化物分配
distributive trade (Distribution of material goods to consumers, through retailing and wholesaling) 配售交易
district heating (The supply of heat, either in the form of steam or hot water, from a central source to a group of buildings) 区域供热
district heating plant (Plant for heating all houses in a district; it consists of a large, efficient, centralized boiler plant or "waste" steam from a power station. The heat is distributed by means of low-pressure steam or high-temperature water to the consumers) 区域性供热厂
disused military site (Military site where all activity has ceased. Such areas, being extremely well sheltered against outside disturbances and in many ways less affected by human landuse than many other open landscapes, can contain significant natural habitats and rare or endangered wildlife. Abandoned military territories constitute an important source of natural landscapes to be managed and restored in an environmentally sound way) 弃用军事用地
ditch (A long, narrow excavation artificially dug in the ground; especially an open and usually unpaved waterway, channel, or trench for conveying water for drainage or irrigation, and usually smaller than a canal. Some ditches may be natural watercourses) 沟渠

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