degradation of properties 中文意思是什麼

degradation of properties 解釋
性能惡化
  • 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。
  • of : OF ＝Old French 古法語。
  • properties : （特性）命令修改特性
  1. Degradation of biomaterials and foods during thermal drying is caused mainly by their thermo - and xero - labile properties

    摘要生物物料和食品在熱力乾燥過程中的質量退化主要是由其熱濕不穩定特性導致的。
  2. The properties and toxicity of phthalic acid esters were presented. pretreatments and analysis of paes were summarized and the development of degradation of paes was introduced

    摘要介紹了環境激素鄰苯二甲酸酯的性質與危害，總結了鄰苯二甲酸酯的分析檢測方法和鄰苯二甲酸酯的污染治理技術。
  3. Moreover, the thesis analyses the biodegradation of petroleum products, evaluates the biological degradation properties of the developed environment friendly base oil and as well the lubricant ' s biodegradation properties at actual conditions by means of self - designed soil simulation and also in water by testing bod5 / codcr values

    分析了石油類產品的生物降解機理，對所研製的環境兼容基礎油的生物降解性進行了評價，通過自行設計的土壤模擬法評價了潤滑油在實際環境中的生物降解性，採用測bod _ 5 cod _ （ cr ）值法來評價潤滑油在水中的生物降解性。
  4. 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。
  5. 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。
  6. 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。
  7. By low - cycle and reverse horizontal loading test, their properties including strength property, deformation property and energy property are studied. we study the loading characteristic values ; the property of hysteretic curve and skeleton - frame curves ; the ductility property and stiffness degradation. lastly, based the data got from the test, this paper analyses and value the seismic behavior of every members

    在試驗基礎上，研究了軸心受壓構件的承載力計算和穩定問題；研究了低周反復水平加載條件下，彎剪構件和整體空心墻板的強度、變形、能量特性；軸壓構件的荷載特徵值；彎剪構件和整體空心墻板的滯回曲線、骨架曲線、延性等參數；從強度、變形和能耗等方面判別和鑒定各構件的抗震性能，對各個構件給出了試驗的結論、評價。
  8. The kapton undergo dramatically degradation and the oxide coating of al or si has excellent properties for ao effects in the course of atomic oxygen beam exposures

    當負偏壓為200v ，鍍膜時間為10min時得到的防護膜與kapton膜的結合力最好。
  9. The researchers hypothesised that the gelling properties of pectin were, in some way, protecting the allergens from degradation

    科學家們假設這種物質的黏著特性保護過敏原免於被降解。
  10. The thermo - degradation of pvc / clay nanocomposites was discussed. the ammonium in the organoclay galleries has bad effect on the properties of the composites

    結果表明：有機粘土中有機胺的加入誘使了材料的分解，對復合材料產生了不利影響。
  11. Calcium phosphates ( cp ) have been studied extensively for cell cultures and have been found to possess good osteoconductive properties. cp can be dissolved in vivo and be absorbed or displaced by tissue. the degradation rate of cp varies in different crystalline phases, which enables to adjust the degradation rate of biomaterials

    鈣磷酸鹽如磷酸三鈣具有骨誘導性，在體內有較大的溶解度，易發生水化作用，並通過體液的侵蝕和細胞的吞噬作用被機體部分或完全吸收而被取代，不同晶型的鈣磷酸鹽在體內的降解速率不同，可調整材料的降解速率。
  12. 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。
  13. ( 4 ) a nonlinear model including the loss of cross - sectional area of corroded rebar, the reduction of mechanical properties of corroded steel and the degradation of the bond strength between concrete and corroded rebar was presented

    氯離子擴散系數是一個隨時間、擴散深度和氯離子濃度變化的變量。 （ 4 ）建立了考慮銹蝕鋼筋截面面積減小、力學性能下降以及混凝土與鋼筋之間粘結性能退化的非線性模型。
  14. 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。
  15. Lin, j. h., 2006, degradation rates and physicochemical properties of rice and corn starches with different amylose contents treated in methanol containing hydrochloric acid ”, ph. d. dissertation, providence university, taichung, taiwan

    林政樺。 2006 。不同直鏈澱粉含量米及玉米澱粉于酸-甲醇處理中之降解速率及其理化特性之探討。靜宜大學食品營養研究所博士論文。
  16. 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。
  17. Secondly, by low - cycle and reverse horizontal loading test, their properties including strength property, deformation property and energy property are studied. we study the loading characteristic values ; the property of hysteretic curve and skeleton - frame curves ; the ductility property and stiffness degradation. at last we analyze the destroy principle and affection reasons of hollow shear wall of r. c with vertical seams in different height and loading measures, we also give the bearing capability calculation formulas and design advises for new type hollow shear wall of r. c

    首先運用ansys有限元程序分析彈性階段水平外荷載施加后，帶豎縫鋼筋砼空心剪力墻板內應力分佈及變形情況，再在試驗數據的基礎上，研究低周反復水平加載條件下，各試件的強度、變形、能量特性；各試件的荷載特徵值；各試件的滯回曲線、骨架曲線；延性及剛度退化等參數；最後，分析了不同剪跨比和加載條件的帶豎縫鋼筋砼空心剪力墻板的破壞機理和承載力影響因素，並給出不同剪跨比和加載條件的帶豎縫鋼筋砼空心剪力墻板承載力計算公式及設計建議。
  18. It results in great degradation of the properities of spacecraft surface materials such as the solar absorptance increase of thermal control coatings, mechanical properties damage of thin films, et al

    它會導致航天器的表面材料性能發生極大的退化，例如熱控塗層太陽吸收率上升、薄膜材料機械性能變壞、變脆等等。
  19. After some numerical analyses, the effects of dilatancy, constitutive relation, rigidity degradation, thickness, properties, continuity conditions at interfaces are analyzed. ( 4 ) an introduction of the background that makes us present this study is made

    通過一系列數值計算，分析了剪脹、本構關系、剛度退化、土層厚度、孔隙率、邊界條件等對液化的影響，編制了計算程序。
  20. Continuous sic fiber reinforced titanium matrix composites hold immense potential for advanced aircraft and aerospace structural applications. however, due to the high reactivity of titanium, brittle reactive products at fiber / matrix interface are easy to form and may lead to a degradation of the mechanical properties of sic / ti composites

    Sic纖維增強ti基復合材料在航空航天領域有重要的應用前景，但由於ti的化學活性大，在復合材料的sic - ti界面處存在嚴重的界面化學反應，會極大的損害sic ti基復合材料的力學性能。
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