natural sediment 中文意思是什麼
natural sediment
解釋
天然沉積物-
The deposition of sediment in our natural stream channels has greatly aggravated floodwater damages.
泥沙淤積在天然河道，已大大加劇了洪水的危害。 -
Natural sediment particles are not spherical.
天然泥沙顆粒不是球狀的。 -
Sediment : a natural by ? product deposited in wine during bottle aging
沉澱：一種在葡萄酒陳年的過程中所形成的葡萄酒的自然成分。 -
The suspended sediment of natural streams is usually made up of grains with a broad spectrum of sizes and fall velocities.
天然河流的懸沙，通常系由各種大小尺寸和沉速的粒子組成。 -
8. a simplified 3 - d natural river flow and sediment transport model is developed based on hydrostatic pressure distribution. the model has been applied to investigate the 3 - d flow and suspended - load transport in nanjing river reach with two branches
（ 8 ）天然三維水流泥沙簡化數值模型，成功地模擬南京某河段水流運動和多分汊河道水沙計算，結果可靠並滿足精度。 -
Aiming at the 28km long river regulation and protection works on fuyuan reach where the river evolutions are complicated and the dimensions of control works are difficult to calculate, this dissertation is to study three - dimensional numerical analogue not only under natural conditions but also under ten regulation schemes, using the river sediment quasi - two - dimensional model associated with the river sediment plane two - dimensional model and the river three - dimensional model
針對江道演變復雜，工程布局及控導工程結構尺寸難以計算的撫遠28公里長江段的防護整治工程，按天然情況和10個不同整治方案利用河流泥沙準二維數學模型、河流泥沙平面二維數學模型和河道三維水流數學模型結合進行三維整體的數值模擬。 -
The degree of sandy desertification will be exacerbating unless some combating measures are put in effect ; through surveying the causes of sandy desertification and its development, we think that the natural basis of sandy desertification is climate changes, landforms, features of sediment and the condition of hydrology, and its immediate cause is the unreasonable activities of human being
探討了沙漠化成因以及發生發展過程，認為，氣候、地貌、沉積物以及水文條件是壩上地區沙漠化的自然基礎，而人類不合理的經濟活動是沙漠化發生的直接原因。 -
On the basis of previous studies, the paper presents a comprehensive review and summary on the influence of sediment to water quality in the yellow river, highlighting four issues : 1 the influence of the sediment on pollutant behavier, 2 the relationship between sediment - associated natural organic matter and water quality parameters of oxygen - consuming organic pollutants and its influence on the assessment of the water quality in the yellow river, 3 the relationship between the heavy metal background values of the sediment and the water quality parameters of the heavy metals and its influence on the assessment of the pollution of the yellow river, 4 the influence of sediment ? ? containing much carbonates in the yellow river on the water quality and the monitoring of the water quality
黃河是世界上罕見的多泥沙河流，泥沙與水相互作用對黃河水質產生顯著影響。根據以往研究工作，對黃河泥沙與水質的關系問題作全面的總結評述和展望，著重於4個問題： 1黃河泥沙對污染物行為的影響2黃河泥沙中的天然有機質與黃河耗氧有機物水質參數的關系和對污染評價的影響3黃河泥沙中的本底量重金屬與黃河重金屬水質參數的關系和對污染評價的影響4黃河泥沙中的碳酸鹽對水質和對水質監測研究的影響。 -
On the basis of previous studies, the paper presents a comprehensive review and summary on the influence of sediment to water quality in the yellow river, highlighting four issues : 1 the influence of the sediment on pollutant behavier, 2 the relationship between sediment - associated natural organic matter and water quality parameters of oxygen - consuming organic pollutants and its influence on the assessment of the water quality in the yellow river, 3 the relationship between the heavy metal background values of the sediment and the water quality parameters of the heavy metals and its influence on the assessment of the pollution of the yellow river, 4 the influence of sedimentcontaining much carbonates in the yellow river on the water quality and the monitoring of the water quality
黃河是世界上罕見的多泥沙河流，泥沙與水相互作用對黃河水質產生顯著影響。根據以往研究工作，對黃河泥沙與水質的關系問題作全面的總結評述和展望，著重於4個問題： 1黃河泥沙對污染物行為的影響2黃河泥沙中的天然有機質與黃河耗氧有機物水質參數的關系和對污染評價的影響3黃河泥沙中的本底量重金屬與黃河重金屬水質參數的關系和對污染評價的影響4黃河泥沙中的碳酸鹽對水質和對水質監測研究的影響。 -
Standard practice for preparation of natural - matrix sediment reference samples for major and trace inorganic constituents analysis by partial extraction procedures
使用部分萃取法的大量和微量無機成分分析用天然雜礦石沉澱物標樣制備的標準實施規范 -
This database include 9112 sets of experimental data and 6013 sets of natural river data. compared with existing sediment transport database, the database of this paper have more data sets than others
該數據庫包含9112組實驗室水槽資料和6013組天然河道資料，與前人所編的泥沙運動數據庫相比，資料的數目大大增加。 -
Supported by the state natural science foundation project " formation mechanism and evolution processes of flood channels in the changjiang estuary ", this paper study systematically the formation and evolution, erosion and deposition, and features of dynamic sediment of flood channels in the changjiang estuary, and put forward a development model of the different flood channels
本文依託國家自然科學基金課題《長江河口漲潮槽形成的機理與演化過程的定量研究》 ，以長江河口的漲潮槽為研究對象，採用沉積和地貌，定性和定量相結合的方法，運用gis技術對河口漲潮槽的形成機理、演化模式、動力沉積特徵以及沖淤變化等問題進行了系統的研究。 -
U. s. scientists studying the 9, 200 - year - old kennewick man say the man was deliberately buried - not just covered over with sediment. " this skeleton is so amazing, " doug owsley, physical anthropologist at the smithsonian institution ' s national museum of natural history, told the seattle times
美國科學家在對著名的肯納威克人遺骨進行研究后，于日前表示，數千年前，這名男子死後是被其他人埋葬在一個墓穴之中的，而並非是被自然沉積物所覆蓋的。 -
At present, many fields remain to further research, especially the profound combination of gis technique with ece ( estuarine and coastal engineering ), which should be developed for the purposes as follows : ( 1 ) to serve the huge comprehensive work in changeable natural conditions and difficult construction conditions which takes a long period and covers a large region, e. g. the regulation work of deepwater channel in the yre ( yangtze river estuary ) ( 2 ) to combine the gis with applied numerical model ( 3 ) to study the hydrodynamic processes and characteristics of waves, tidal currents and sediment transport, as well as the affection carried by the regulation work in an estuary ( 4 ) to monitor and to analyze ees ( evolution of erosion and sedimentation ) and the variation of riverbed ( 5 ) to play a role of dynamic supervising of a engineering project
目前尚有許多有待進一步研究的領域，尤其是以服務于長江口深水航道治理這樣規模大、周期長、影響區域廣、自然條件復雜、施工情況多變的國家重點工程為目的，將gis與專業應用數學模型結合，對河口海岸波浪、潮流、泥沙運動的動力機制，以及整治工程建築物對其影響的研究，對入海航道沖淤和河勢演變的監測分析，對施工進展和工程效果實現「動態」監控和管理，尚缺乏同gis技術的深入有效結合。
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