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Terms for subject Environment (7347 entries)
salmonella (General name for a family of microorganisms, one of the largest groups of bacteria, that includes those most frequently implicated in food poisoning and gastroenteritis. Unhygienic handling and inadequate cooking of poultry and meat, improper storage of cold meats and, more recently, contamination of battery-reared hen eggs, are the most common sources of salmonella infections) 沙门氏菌
salt (The reaction product when a metal displaces the hydrogen of an acid)
salt compartmentation 盐区隔化
salt content (Amount of salt contained in a solution) 盐含量
salt load 盐负荷
salt marsh (Areas of brackish, shallow water usually found in coastal areas and in deltas. There are also inland marshes in arid areas where the water has a high salt level because of evaporation. They are environmentally delicate areas, extremely vulnerable to pollution by industrial or agricultural chemicals, or to thermal pollution, which often results when river water has been used as the coolant in power stations and industrial plants) 盐沼
salt meadow (A meadow subject to overflow by salt water) 盐草地
salt plug (A mass of salt which is injected as a diapir (a dome in which the overlying rocks have been ruptured by the squeezing-out of plastic core material) into overlying sedimentary rocks, thereby piercing and deforming them. The mechanism is similar to that of an intrusive magma, with the salt deforming and behaving plastically under pressure. It is of great economic importance because it assists in the formation of a "trap" structure for oil accumulation, in addition to its associated deposits of anhydrite, gypsum and sulphur) 盐栓
salt water (Water of the seas, distinguished by high salinity) 盐水
salvage (The act, process, or business of rescuing vessels or their cargoes from loss at sea) 抢救
sampling (The obtaining of small representative quantities of material for the purpose of analysis) 采样
sampling technique (Method of selecting items at random from a set in such a manner that the sample will be representative of the whole) 取样技术
sand (A loose material consisting of small mineral particles, or rock and mineral particles, distinguishable by the naked eye; grains vary from almost spherical to angular, with a diameter range from 1/16 to 2 millimeters)
sand dune (An accumulation of loose sand heaped up by the wind, commonly found along low-lying seashores above high-tide level, more rarely on the border of large lakes or river valleys, as well as in various desert regions, where there is abundant dry surface sand during some part of the year) 沙丘
sand dune fixation (Stabilization of dunes effected by the planting of marram grass (Ammophila arenaria), or rice grass, whose long roots bind the surface layers of sand and so hinder its removal by wind. A larger scale method of dealing with the same problem is by afforestation) 沙丘固定
sand extraction (The extraction of sand by mining for building purposes and for the extraction of heavy minerals such as rutile and zircon) 沙石开采
sand flat (A sandy tidal flat barren of vegetation. A tidal flat is an extensive, nearly horizontal, marshy or barren tract of land that is alternately covered and uncovered by the tide, and consisting of unconsolidated sediment (mostly mud and sand). It may form the top surface of a deltaic deposit) 沙坪
sand pit (A place where sand is extracted from the ground) 砂坑
sand pit 磨光玻璃表面上的小凹坑
sand trap 除砂盘