sediment      沉积物(5006) 泥沙(5110) 底泥(751) 沉积(2374)   沉积物     28 organism and 14 surface sediment samples from Daya Bay were collected to determine the compositions and concentrations of dichlorodiphenyltrichloroethanes(DDTs),hexachlorocyclohexanes(HCHs) and chlordanes(CHLs) in 2003.Stable isotope δ15N,δ13C values and lipid contents in organism were also measured. Attention was paid to study the OCPs pollution status in sediment and organisms and their bioaccumulation law in Daya Bay.     于2003年采集大亚湾海域28个鱼类等生物样品和14个表层沉积物样品,分析其中滴滴涕(DDTs)、六六六(HCHs)和氯丹(CHLs)各组分的含量以及脂含量和δ15N,δ13C同位素值,重点研究了大亚湾沉积物和生物体中有机氯农药(OCPs)的污染现状及其生物积累规律. 短句来源     RAPID DETERMINATION OF TOTAL ORGANIC CARBON IN SOIL/ SEDIMENT SAMPLES     土壤沉积物样品中有机碳含量的快速测定 短句来源     Study on Application on Fallout Beryllium-7 as a Tracer in Soil Erosion and Sediment     ~7Be在示踪土壤侵蚀和沉积物中的研究探讨 短句来源     The hydrology and water quality of runoff events were measured on gauging station and the runoff plots in the watershed and the rules of runoff, sediment, nitrogen and phosphorus load were analyzed.     在流域出口建立卡口站,进行基于过程的汛期水文水质全面监测,同时在流域内设立径流小区,分析了径流事件中径流量、沉积物量、氮和磷负荷规律。 短句来源     Since the Holocene the soil erosion process in the Loess Plateau can be divided into 5 stages, of which starting times are 11, 7.0, 0.7, 0.3 and 0.15 ka B P. The regression equations of some parameters of modern rivers in the plateau are established by using the data of grain size of sediments, sediment discharge of river, annual runoff and precipitation.     黄土高原全新世以来可划分出5个侵蚀阶段,其起始年龄分别为11,7.0,0.7,0.3,0.15kaBP。 根据高原现代河流沉积物的粒度组成、河流输沙量、径流量和年降水量等数据建立了各个指标的回归方程。 短句来源 更多          泥沙     The design and application of the stations with automatic measurement of runoff and sediment in Yichuan     宜川自动径流泥沙测站的设计及其应用 短句来源     The Soil Erosion and Its Control in the Granite Eroding Area of Southeast Fujian Ⅲ.Study on Sediment Dilivery Change     闽东南花岗岩侵蚀区土壤侵蚀规律与治理 Ⅲ.泥沙输移动态的研究 短句来源     An Analysis of Soil Erosion Rules and Sediment producing Sources in the Region of Three-Gorge of the yangtze River     长江三峡区土壤侵蚀规律及泥沙来源分析 短句来源     Research on Amount of Soil loss in Slope Surface and Sediment into the Yangtze River in Three-Gorge Region     长江三峡区的坡面土壤流失量和入江泥沙量研究 短句来源     Soil Erosion and Sediment Deposition in Dongting Lake     洞庭湖泥沙沉积与土壤侵蚀 短句来源 更多          底泥     Compound fertilizer from chemical fertilizers with sediment of the West Lake and its application in vegetable     底泥化肥复混肥的加工及其在蔬菜上的应用效果 短句来源     The volumetric weight of the sediment could be reduced, and its porosity could be improved while the sediment was mixed with the natural soil by the ratio of 1∶1 or 1∶ 2 in bulk, or the straw, 5% the bulk of the correspondinging sediment, CaO, 0.5% the bulk of that, the peat, 6.7% the bulk of that was added sequentially again.     将底泥与土壤按体积比1∶1或1∶2混合后,依次增施相应底泥体积5%的秸秆、0.5%的石灰、6.7%的草炭均能有效地降低底泥的容重,提高孔隙度,改善其通透性。 短句来源     The plot experiments were conducted to study the effects of land utilization of municipal sludge and lake sediment on nutrients and heavy metals(Cd,Pb) in soil-plant system.     采用田间小区试验,探讨了城市污泥与湖泊底泥土地利用对土壤-植物系统中养分及重金属Cd、Pb的影响。 结果表明,城市污泥与湖泊底泥能有效增加土壤养分含量; 短句来源     Effect of Humic Acid on Ionic Form Distribution and Activity of Lead and Cadmium in Pond Sediment     腐殖酸对池塘底泥中铅、镉的离子形态分布及其活性的影响 短句来源     The analysis results for the properties of physics and chemistry of the sediment were as followings: the structure of the sediment was denser, and the permeability was worse because its volumetric weight was higher and its porosity was lower.     对底泥理化性状的分析结果显示:疏浚底泥容重较高,孔隙度较低,结构较为密实、通透性能较差; 短句来源 更多          沉积     Soil Erosion and Sediment Deposition in Dongting Lake     洞庭湖泥沙沉积与土壤侵蚀 短句来源     Distribution Characteristics of ~(137) Cs in Erosion Sediment in Red Soil Region     红壤侵蚀沉积点~(137)Cs垂直剖面分布特征 短句来源     STUDY ON EROSION AND SEDIMENT ALONG THE BARE SLOPING SURFACT WITH REE METHOD     用稀土元素示踪方法研究裸露坡面沿程侵蚀与沉积 短句来源     Balance system of nutrient at the sediment interface in the culture area     增养殖区沉积界面营养物质平衡体系研究 短句来源     The hillslope erosion processes include soil separation, sediment transport and sediment precipitate, which these three process result from the rainfall splash erosion and runoff erosion.     坡面侵蚀过程包括降雨溅击和径流冲刷引起的土壤分离、泥沙输移和沉积3大过程，研究和分析这些过程发生、发展的水力、土壤、地形条件以及各过程间相互转化、相互影响的机理，是建立土壤侵蚀物理模型的前提条件。 短句来源 更多            查询“sediment”译词为其他词的双语例句   查询“sediment”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   sediment The variables studied were transport of sand, underlying surface roughness, windblown sediment, wind-sand flow structure, soil mechanical composition and amount of wind erosion. 例句来源       At a height of 0-20 cm, the height increased while the sediment discharge percent of sand flux decreased; there were significant differences in the sand flow formation under different land-use types. 例句来源       4) The amounts of wind erosion and sand sediment were different among different land-use types. 例句来源       Effect of forest vegetation on runoff and sediment production in sloping lands of Loess area 例句来源       At the same time, better correlative relationship between runoff and sediment production and rainfall and rainfall intensity were testified by multiple regression, but the correlation decreased gradually with the increase of canopy density of forest. 例句来源       更多                    Investigations on the mineralogical properties of the important soils developed on sediments in Northern Honan made by X-ray diffraction, polarizing microscopic examination and chemical analysis showed that the mineralogical composition of the soil was closely related to the origin of the sediment materials, but not related to the soil types and the mechanical composition. The main constituent of the clay fraction (<1 micron) of the soils was hydrated micas, at the same time kaolinite, montmoril...             对豫北平原几种主要沉积物发育的土壤进行了X射线分析、化学分析和偏光显微镜鉴定。结果表明在0.001毫米和0.01—0.1毫米粒级中,这几种土壤的矿物成份与沉积来源有关,而与土壤类型及土壤机械组成关系不大,这些沉积物发育的土壤的粘粒部份(小于0.001毫米)主要成份是水化云母,并有高岭石、蒙脱石和少量的蛭石。黄河沉积物所发育的土壤含蒙脱较多;漳河沉积物、黄土、次生黄土所发育的土壤次之;沁河沉积物所发育的土壤含蒙脱最少。在0.01—0.1毫米这一粒级中,原生矿物的轻矿物主要由石英、长石和云母组成。重矿物在黄河沉积物中以普通角闪石为主,沁河和漳河沉积物以磁铁矿为主。最后讨论了根据矿物组成来推测沉积物的来源的可能性。 文摘来源          The main regions of sediment yield lie on the both sides of Huang He from Hekouzen to Lunmen, and in the upper and middle reaches of Jinhe, Lohe and Wehe river on the Loess Plateau. The sediment yield is concentrated in the period from July to September, or in one or two rainstorms .The delivery ratio approches to in the watersheds on the Plateau. Sediment yield in a small catchment is the result of both physical factors and human activities.Soil erosion is proportional to the addition of ...             黄土高原的主要产沙地区是河口镇至龙门黄河干流两侧和泾、洛、渭河中上游,产沙时间集中 7—9月或一、二次暴雨期。流域产沙量与河道断面输沙量基本一致。产沙最与降雨量加径流深组合因子成正比相关,并随坡度增大而增加,坡度超过25—28度水流面蚀强度减弱。砂黄土的可蚀性最大,黄土其次,粘黄土最小。灌木林的防蚀效果最好。近三十年来黄土高原的产沙量进一步增加,其中由人类活动而增加的沙量约占黄河平均输沙量的23～35％。 沟道流域的产沙过程具有垂直分带规律。沟间地以细沟侵蚀产沙为主,沟谷地是水力、重力和洞穴侵蚀综合作用的场所。黄土丘陵区沟谷地的产沙量此沟间地大59.0％左右;黄土塬区产生的泥沙绝大部来自沟谷地。 文摘来源          Yulin prefecture in N. Shanxi is one of the main source zones of sediment in the Yellow River. The gullied rolling loess area in particular, covering 29,000km2, has an erosion modulus of 15,000-44,800 t/km2 and is subject to severe droughts. The building of silt-arresters for siltation of land in gullies carried out on a trial basis at key positions in the fifties was later Popularized, and since the seventies,dam-building by sluicing siltation have been widely applied in our country and by the end of...             打坝淤地是沟壑治理的主要措施之一。各地实践证明,它具有显著的拦泥增产和控制水土流失的作用,但也存在易水毁和投工投资较多等问题。如何合理布设坝系工程,提高防洪保收能力,扩大经济效益,是值得深入研究的课题。本期发表陕北有关治沟工程布局的两篇文章,供各家参考。 文摘来源   << 更多相关文摘         相关查询: sediment handling sediment contamination sediment classification sediment analyzer serious sediment graded sediment sediment processes common sediment sediment profiles sediment modulus sediment computation terrace sediment  对查询结果不满意

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