physical degradation 中文意思是什麼

physical degradation 解釋
物理降解
  • physical : adj 1 物質的，有形的，形而下的 （opp psychical spiritual mental moral）; 確鑿的；外界的。2 身體的...
  • degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
  1. The paper studies the degradation rule of physical mechanical property of vulcanizate during the period of heat ageing, which involves the relationship between the property, variable temperature and time. the analytic expressions for the frictional temperature rise of the interface were presented according to the theory of heat conduction of solid when a tire slides of rolls along the road. finally, the value of temperature and pressure is used to monitor the tire ' s status

    本課題針對影響汽車輪胎橡膠機械性能的溫度老化模型進行了一定深度的理論研究，並進一步研究輪胎的在滑動、滾動時的溫度場的數學模型，在理論上論證了溫度、壓力是影響輪胎行使安全性能的重要因素，並以其作為最終的監測對象。
  2. Based on the hydrodynamic energy transport model, the influence of variation of negative junction depth caused by concave depth on the characteristics of deep - sub - micron pmosfet has been studied. the results are explained by the interior physical mechanism and compared with that caused by the source / drain depth. research results indicate that with the increase of negative junction depth ( due to the increase of groove depth ), the threshold voltage increases, the sub - threshold characteristics and the drain current driving capability degrade, and the hot carrier immunity becomes better in deep - sub - micron pmosfet. the short - channel - effect suppression and hot - carrier - effect immunity are better, while the degradation of drain current driving ability is smaller than those with the increase of depth of negative junction caused by source / drain junction shallow. so the variation of concave depth is of great advantage to improve the characteristics of grooved - gate mosfet

    基於能量輸運模型對由凹槽深度改變引起的負結深的變化對深亞微米槽柵pmosfet性能的影響進行了分析，對所得結果從器件內部物理機制上進行了討論，最後與由漏源結深變化導致的負結深的改變對器件特性的影響進行了對比.研究結果表明隨著負結深（凹槽深度）的增大，槽柵器件的閾值電壓升高，亞閾斜率退化，漏極驅動能力減弱，器件短溝道效應的抑制更為有效，抗熱載流子性能的提高較大，且器件的漏極驅動能力的退化要比改變結深小.因此，改變槽深加大負結深更有利於器件性能的提高
  3. The study has investigated and compared soil physical, chemical, biochemical properties of eight stands on paired sites in mountainous regions of northeastern china, trying to look for the mechanism of soil degradation and the change trend of soil properties in different age of plantations in relations to forest productivity. the eight stands are 4 first rotation of larix olgensis plantations with different age classes, the second rotation of larix olgensis young stand, pinus sylvestris var

    本文通過固定和典型樣地，對東北山地不同生長發育階段落葉松人工林和二代落葉松幼齡林以及與二代落葉松幼齡林同一塊林地的樟子松幼齡林、天然次生林、落葉松水曲柳混交林等8個林型土壤質量進行了對比與分析，深入探討了落葉松人工林土壤質量降低的機理和不同發育階段土壤質量變化規律以及與森林生產力變化的關系，並提出了林地土壤質量調控措施。
  4. Severe fires can often cause changes in successional rates and soil hydrologic functions, degradation of soil physical properties, alter c : n ratios, and result in subsequent nutrient loss through accelerated erosion, leaching or denitrification, and alterations in microbial populations and associated process can occur

    高強度火燒往往能引起演替頻率的改變，土壤物理性質退化，水文功能發生改變，改變c n比，加劇侵蝕、淋溶和反硝化作用，導致養分流火，微生物數量及其相關過程發生變化。
  5. Study the degradation properties of scaffolds, and ethanol disinfection effects on its physical properties. modify the material surface function and improve the hydrophilic ability. construct cytokine control - release system in foamy scaffolds that sustained release growth factors

    針對支架進行基本降解性能研究，考察plga支架在醫用酒精消毒過程中物理形態改變；在此基礎上對支架內部進行改性並構建細胞因子控制釋放系統，優化材料表面特性、改善支架的親水性並穩定釋放細胞因子。
  6. The main effect factors include : 1. microbial species, which seem to have different degradation rate under varied circumstances and n - alkanes ; 2. physical and chemical properties of crude oil itself, which have an important effect on biodegradation, such as conglutination, boiling point, refractive index, ingredient and concentration of the oil ; and 3. culture condition of microorganism, under which the degrading activity of microorganism will be affected by surfactant, light condition, sorbent, nutrition, co - metabolite, oxygen, temperature and salinity during the inoculation of selected or indigenous microorganisms

    其中主要影響因素包括：菌種的影響，菌種在不同的環境中和對不同碳鏈長度的碳氫化合物表現出不同的降解效率；石油物質本身物理化學特性的影響，如石油物質在水體或土壤中的濃度以及石油的粘度、沸點、折射率等特性；生存環境條件的影響，在接種入高效率的降解菌或利用土著微生物進行降解時，降解率受到生存環境中各種條件的影響，如表面活性劑、光照條件、吸附劑的利用、營養鹽、共代謝底物、氧氣、溫度、鹽度等。
  7. Based on analysis of soil physical, chemical and biological properties, soil properties and soil integrated fertility index ( iff ) of different successional series of subalpine coniferous in western sichuan were systematically studied. the results showed soil fertility degradation of subalpine coniferous forests was mainly related to decrease of soil organic matter

    從土壤物理、化學和生物學性質角度出發，系統地研究了四川西部亞高山針葉林不同演替階段土壤性質和土壤綜合肥力指標值，結果表明：川西亞高山針葉林土壤性質主要受土壤有機質的影響，人工林地土壤肥力質量退化主要由於有機質的減少並導致相關土壤物理、化學和生物學性質惡化。
  8. Physical property of beta - tricalcium phosphate calcium polyphosphate poly - l - lactic acid composites and its degradation

    聚左旋乳酸復合材料的物理及其降解性能
  9. Agricultural intensification plays an important role in stabilizing the food production in china, while bringing about an increasing negative impact on the soil and eco - environment as a result of the long - term highly - intensive land use and agricultural chemical overuse, thus leading to degradation of soil physical, chemical and biological properties, which are demonstrated as soil nutrient imbalance, soil acidification, pollutant accumulation, and biodiversity deterioration and posing serious stress and threat to the ecosystem per se and the environment

    摘要集約化農業對保障我國糧食安全發揮了巨大的作用，但其長期的土地高強度利用和農用化學品過量投入的負面影響也日益顯現，導致的以土壤養分失衡、土壤酸化、有害物質積累、生物多樣性衰退等為主要表現形式的土壤物理、化學和生物學退化，給生態系統本身與環境都帶來了巨大壓力和嚴重威脅。
  10. In original and jamming slightly vegetation, because dead roots, branch and leaves back to soil, soil organic matter higher, soil available phosphorus higher, too ; chemical and physical characters of soil were stabilization. the reason were original vegetation have more species and structure of community was stable. the degradation of fertility and structure of soil in secondary vegetation was influenced by change with structure and form of community

    在人為干擾小的原生性森林，植物種類豐富，群落結構穩定，植物死根系和枯枝落葉全部回歸土壤，土壤有機質含量高，養分呈有機態為多，故有效磷較高，土壤理化性質較穩定；次生植被群落土壤結構和肥力的退化是由於群落組成和結構的改變導致枯枝落葉成分和土壤發規白山地還小問沙消民俗一非定俗地征王卿喬忡旺w比收財育環境差異而引起，次生植被土壤的退化狀態隨植被退化程度不同而有差異。
  11. The harms of soil compaction represented briefly as soil bulk density and penetration resistance increased, macroporosity decreased, soil physical, chemical and biological properties deteriorated, which effected on crop growing and soil structure degradation, and has become one of the principal obstacle factors for sustainable development of agriculture

    土壤機械壓實危害主要表現在土壤容積質量和機械阻力增加，大孔隙減少，土壤物理、化學、生物性狀惡化，進而影響作物的生長發育，土壤結構發生退化，已成為當前制約農業可持續發展的障礙因素之一。
  12. Utilizing the scanning electron microscope, x - ray diffractometer, type 9310 microporosity analyzer, the microstructure and chemical composition of mudston, and its macro - variation of physical and mechanical character are measured and analysed, the mechanism of mudstone degradation and softening in water is systematically studied in this paper

    以掃描電子顯微鏡、 x射線衍射儀、 9310型微孔結構分析儀等先進的設備為測試手段，從泥巖的微觀結構及物質組成等方面入手進行研究，結合泥巖遇水后宏觀物理-力學性質的變化規律，全面闡述了泥巖遇水的崩解軟化機理。
  13. The global programme of action for the protection of the marine environment from landbased activities is a non - binding global agreement, reflecting the resolve of states to address the serious impacts of land - based sources of pollution and physical degradation on the coastal and marine environments

    《保護海洋環境免受陸基活動影響的全球行動綱領》是一項不具有約束力的全球性協定，反映出各國應付陸基污染源和水文物理退化對沿海及海洋環境嚴重影響的決心。
  14. Review of the status quo and progress on treating methods of dyeing wastewater were presented, especially the advanced techniques were introduced, such as membrane extraction, ultrasonic processes, high - energy physical processes, advanced oxidation processes, electrochemical processes, photochemical degradation and efficient bacterium processes

    摘要本文系統地綜述了國內外印染廢水治理現狀和進展，特別是近年來出現的一些新技術，如膜分離技術、超聲波技術、高能物理法、深度氧化法、電化學法、光化學法和高降解菌法。
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