main soil type 中文意思是什麼
main soil type
解釋
大土類-
On the basis of the government ' s policy of revitalizing the northeast old industrial base, preventing black earth from degeneration and strengthening protection of black soil in china, according to analysis of the distribution of black soil and the present research of black earth degeneration, the author summarized the main degradation type of black earth, revealed main reasons for its degradation, put forward some measures to prevent black earth from degrading and protecting black earth in addition, the author put forward the new and further direction to study the degradation of black earth on the basis of the existing study, and hope to play a role of inducing purpose in assuring sustainable utilization of black earth resource and furthering study
在國家振興東北老工業基地和防止黑土退化及加強黑土保護之際，通過對黑土分佈狀況和黑土退化研究現狀的分析，總結出黑土退化方式，揭示了其退化的主要原因，提出了防止黑土地退化和保護黑土地的措施，在現有研究的基礎上提出黑土退化研究的新方向，希望能為黑土資源可持續利用和進一步研究起到拋磚引玉的作用。 -
Comparing with the same category overseas jointless bridges, the new type bridge has more reasonable structure, more simple and convenient construction, and better use effect etc. the main work in this paper is described as follows : ( 1 ) this paper introduces phylogeny and reseach survey of the joints bridge inland and abroad, and a new jointless bridge structure ? new type semi - integral abutment bridge is based on these, which characteristic of own structure and setting of primary component are expatiated. ( 2 ) this paper analyses influence of temperature effect, creep, shrinkage and circumambient soil of run - on slab on the new type structure, and analyses the forcing performance of beam, abutment and run - on slab of the new type semi - integral abutment bridge, and constrast to the same category joints bridges
本文主要做了以下工作: （ 1 ）介紹了無縫橋梁在國內外的發展歷史、研究概況，並在此基礎上提出了一種新的無縫橋梁結構形式-新型半整體式無縫橋梁，闡述了它特有的結構形式以及主要構件的設置; （ 2 ）分析了溫度效應、徐變和收縮以及搭板周圍土體對這種新型結構的影響，對新型半整體式無縫橋主梁、橋臺以及搭板進行了受力性能分析，並和同類無縫橋梁進行了對比分析。 -
E., picea crassifolia forest, sabina przewalskii forest, shrubs and grazing land, soil water dynamics was revealed. transformation feature and availability of water moisture content for main vegetation type were studied and evaluated
3對祁連山林區雲杉林、圓柏林、灌叢林、放牧草地等4種主要植被類型土壤水分動態研究，揭示出生長季節內各植被類型的土壤水分動態變化規律。 -
The land evaluation result ofhandan district show : 19. 7 % land is unsuitable for agricultural use for soil erosion risk ; 2. 5 % land is unsuitable for agricultural use for poor soil water condition ; 9. 5 % land is marginally suitable because water or nutrition condition is not good enough ; 68. 3 % land is suitable or very suitable for agricultural land use. the third part is the application of soter land information system in land use analysis based on statistical method and clue - s model. through land use analysis in handan, the main type of land use in handan is agricultural land use
土地利用整體結構在1980 - 2000年沒有發生太大變化，只是林地上升至第2位形成耕地、林地、草地-城鄉工礦居民用地、水域、未利用土地的結構；邯鄲地區土地利用結構空間分佈研究表明：西部山區土地利用結構為林地、草地、耕地、水域、建設用地和未利用土地；中部丘陵臺地區土地利用結構為耕地、草地、建設用地、水域、林地和未利用土地；東部沖積平原區土地利用結構為耕地、建設用地、林地、水域和草地。 -
Based on the analysis of natural and geographic background of jiaozhou land type, under the principle of comprehensiveness, dominant factor, produce and practice, thd author made field investigathion and the defined thd line of land type with reference of 1 : 15000 aviation chart, geologic map, topographic map, soil map, and climate planning map of jiaozhou. the system of land classification included land unit ( genus ) - land unit ( family ), furthermore, according to thd above classification system, the author drew thd 1 : 50000 land type map. finally, this thesis elaborated thd main characters, utilizing situation and of grade - 2 land type land unit genus
膠州市土地類型的劃分，是在分析膠州市土地類型區域自然地理背景，剖析各土地分異因素，按照綜合性原則、主導性原則和實踐性原則，應用1 ： 1 . 5萬航空象片，進行野外實地考察，並參考該市的地質圖、地貌圖、土壤圖、土地詳查圖和氣候區劃圖，在綜合分析的基礎上，確定土地類型界限，以限區（屬） ?限區（科）構成土地分類系統，並據此編制膠州市1 ： 5萬土地類型圖。 -
This paper, in allusion to damage of expansion joint of bridge, introduces a sort of new structure of jointless device - semi - integral abutment jointless bridge, and establishes model of general structure finite element of this bridge, and in details analyses its qualities of stress. the model considers the interaction of superstructure - substructure - soil. resistance of the soil behind abutment adopts still soil pressure and elastic resistance when the temperature rising, but active soil pressure when dropping. analysis of qualities stress of bridge includes of action of dead load, car load, temperature load of season character. taking an 100m length pc semi - integral abutment jointless bridge as instance, the paper establishes the model of plane frame by applying large common software - anasys, and analyses it by elastane and large deformation to imitate character of stress and deformation of general bridge. at the same time corresponding models of finite element of joint bridge and integral abutment bridge are established, and unique stress and performance of structure of semi - integral abutment jointless bridge are researched by comparing and analysing character of three different models under same loading, and controlling factor of design and constitution are generalized. in conclusion, for semi - integral abutment jointless bridge, on one hand shear, moment and deflection of the main beam and axis force of substructure are approximate with that of joint bridge, and integral stifmess of structure is increased and damage of expansion joint is eliminated, on the other hand there is axis force in main beam, shear and moment of substructure are bigger than that of joint bridge. in all this type of jointless bridge has rational stress and is worth of application and popularization
半整體式橋臺無縫橋梁計算模型考慮了上部結構-下部結構-土的共同作用；臺後土抗力升溫時採用靜止土壓力加彈性土抗力，降溫時採用主動土壓力；分析橋梁受力性能時考慮了結構自重、車輛荷載和季節性溫變荷載的作用。以一座橋長100mpc半整體式橋臺無縫橋梁為實例，採用大型通用軟體ansys建立平面框架模型，進行彈性、大變形分析，模擬全橋受力和變形特點；同時建立與此對應的有伸縮縫橋梁和整體式橋臺無縫橋梁有限元模型，通過三種橋型同步加載對比分析，研究半整體式橋臺無縫橋梁獨特的受力特點和結構性能，總結其設計控制因素和構造要求。通過本文研究知：半整體式橋臺無縫橋梁主梁的剪力、彎矩、撓度和下部結構的軸力與梁式橋相近，結構整體剛度增大，併除去了伸縮縫病害；但主梁增加了軸力，下部結構剪力、彎矩較梁式橋大；綜合分析是一種受力合理有實踐和推廣價值的橋型。 -
Catastrophic damages to structure can be made by lateral permanent displacement, namely large ground displacement, on gently sloping ground induced by liquefaction of saturated soil deposits during earthquake, which is the main type of seismic damages of highways, railways, bridges, docks, embankments, buildings, underground structures and lifeline engineering in liquefied area. in recent ten years, studies on the new type of failure made by liquefaction have been carried out
地震過程中由於飽和砂土液化誘發的小坡度地面側向永久位移即地面大位移對結構的破壞，是液化區公路、鐵路、橋梁、碼頭、堤壩、房屋、地下結構與生命線工程震害的主要形式之一，近十幾年來，人們越來越重視對這種新的液化破壞形式的研究。 -
A preliminary study on laws of soil and water losses in gneiss, which is the main type of rocks in taihang, was carried out in this paper on the bases of examination data, survey of flood and historic statistic data
根據試驗觀測數據和洪水災害考察結果，結合歷史統計資料，對河北太行山的主要類型巖石片麻巖低山區的水土流失特點進行了初步研究。 -
Its main contents includes : ( 1 ) through studying in details the basic type and characteristic, slope constructions and its combination types of the area ' s rock soil, and putting forward to manage the measure reasonable, the context finds the result that this area ' s slope construction type is main dip slope, scarp slope and transverse slope. ( 2 ) before studied the stability of the highway slope, it must be knowing the transform and the failure mechanism mode
其主要內容包括：通過詳細研究該區巖土體的基本類型及特徵、邊坡結構及其組合類型，並提出合理的治理措施，本研究區邊坡結構類型主要為順向、反向和切向三大類型。進行公路邊坡的穩定性研究，首先必須搞清邊坡的變形破壞機制模式。 -
Abstract : based on the investigation and sampling analysis data, soil type and distribution, soil fertility characteristics, land utilization status, land resource quality and main problem in dongxin village were evaluated. the measures and approaches of soil amendment, fertilization and rational utilization were presented
文摘:根據調查采樣分析資料，論述了東新村土壤類型與分佈、土壤肥力特徵、土地利用現狀和土地資源質量以及土地資源利用中存在的主要問題，提出了改良、培肥和合理利用的措施和途徑。
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