instability condition 中文意思是什麼

instability condition 解釋
不穩定條件
  • instability : n. 動搖性，不穩定性；不堅決，反復無常，三心二意。 the instability of human affairs 人事滄桑。
  • condition : n 1 狀態，狀況，情形；品質。2 〈pl 〉外界狀況，周圍情形。3 地位，身分。4 條件；【語法】條件子句。...
  1. 2 ) from the analysis of the aerodynamic parameters and turbulent flux transfer under different synoptic conditions we achieve the conclusion that on sands raising and sandstorm days turbulent momentum and sensible - heat fluxes are important exchange factors in the boundary layer, with turbulent exchange stronger in sandstorm weather than both on fine and sand raising days. prior to the occurrence of such an event, in particular, the super - adiabatic instability in the near - surface boundary will reinforce sandstorm weather condition. 3 ) atmospheric turbulent diffusion parameters z and y have apparent daily variation

    沙塵天氣下以親地殼元素為主的氣溶膠元素濃度均高於背景大氣和浮塵天氣，而且沙塵天氣強度愈強，元素濃度的增加愈顯著；背景大氣、浮塵天氣條件下親地殼元素的濃度一般在10 ~ （ - 1 ） 10 ~ 0 g m ~ 3量級，揚沙、沙塵暴時一般達10 ~ 1 g m ~ 3量級，特強沙塵暴時高達10 ~ 2 g m ~ 3量級。
  2. In order to make clear the changing situation about various meteorological element fields during the heavy rain. the diagnostic analysis in three aspects was done in this text : the vapor conditions, in which the difference of the temperature and dew point, relative humidity, vapor flux and the divergence of vapor flux were discussed ; the dynamic and thermodynamic conditions, vorticity, divergence and vertical velocity were analyzed ; the vertical layer condition, which included potential temperature, static stability, convective ( potential ) instability and the vertical profile of eight physical fields over the observatory of shenyang

    為了弄清這次暴雨過程各氣象要素場的演變情況，分三方面對暴雨的水汽條件（使用了溫度露點差、相對濕度、水汽通量和水汽通量散度） 、動力條件（使用了散度、渦度和垂直速度）和垂直層結條件（使用了位溫、靜力穩定度和潛在不穩定度以及沈陽單站的8個物理量的垂直廓線）等的變化，分別進行了診斷分析。
  3. It is shown in the simulation that sliding mode control can guarantee the stability and robustness while vehicle is braking even if abs operates at the instability region of the adhesion coefficient and wheel slip curve or the surface condition changes, which is better than the pid control and nonlinear pid control

    模擬結果顯示，即使在附著系數和滑移率關系曲線的不穩定區域，或是路面狀況發生變化，滑模控制也能保證制動的穩定性和魯棒性，其控制效果優于pid和非線性pid控制效果。
  4. This kind of instability bulk movement is induced by wave cyclic loading, as a result the slope of bottom bed decrease, water depth increase, and instability bulk movement has the character of subregion, regularity and head erosion, thus it will influence evolvement of region of interest landform, and change flow field and bottom stratum condition continually, so will lead to dynamic influence on structure foundation soil

    這種不穩定塊體運動由波浪循環荷載誘發，其結果使底床整體坡度減緩，水深加大，而且不穩定的塊體運動具有小區域、多發性和溯源侵蝕的特點，將繼續影響著海域以後的水深地形的發展演化，並不斷改變著該區的流場與底床地層條件，對構築物地基土的穩定性產生著動態的影響。
  5. First super - low specific - speed centrifugal pump has a long and narrow flow passage for its high head and low capacity, and the power absorbed by disc friction is too high, so the efficiency is very low ; secondly the diffusion of flow passage is so high, that the reserved flow often emerges at the inlet and outlet of impeller. therefore the h ~ q characteristic curve is often hump - shaped, and at the low - capacity operating condition the instability often occurs ; thirdly the centrifugal pump at high - capacity operating condition is easy to overload because the n ~ q curve appears a rising trend

    首先由於它的揚程較高、流量較小，所以它的流道狹長，圓盤摩擦損失較大，效率相對較低；其次由於它的流道擴散較嚴重，易在葉片進口產生迴流和在出口產生脫流，揚程流量特性曲線易出現駝峰，在小流量工況下易產生不穩定現象；第三，由於其功率流量曲線呈現上升趨勢，在大流量區運行時電機易過載。
  6. Surge phenomenon is an instability flowing condition when centrifugal compressor working at low flux, it can make the compressor shut down, the production process interrupted, then bring us the loss of economy. further more, it can damage the compressor, make it broken and can even hurt people

    喘振現象是離心壓縮機工作在小流量時的不穩定流動狀態，它的出現輕則使壓縮機停機，中斷生產過程造成經濟損失;重則造成壓縮機葉片損壞，引起壓縮機設備報廢甚至造成人員傷害。
  7. Experiments are mainly focused on initial growth of unsteady primary instability, high frequency secondary instabilities both in natural condition and artificial high frequency excitation

    重點研究了基頻不穩定性擾動的初始增長過程，以及自然條件下與人工高頻激勵下的高頻二次不穩定性擾動發生與發展的一些特性。
  8. The first diagnostic analyses show that the heavy rainfalls are produced together by vortex, shear line and upper and lower jets, meiyu front. the condition of high energy, saturation, potential instability is propitious to the form and maintenance of heavy rainfall. the result of numerical simulation by mm5 model shows that heavy. rainfall has close relation with meso - scale vortex pole and strong convection

    採用ncep全球譜模式和常規觀測資料對「 03 . 7 」江淮地區的兩次暴雨過程的影響系統及其可能機制進行了初步診斷分析，發現梅雨暴雨是受低槽、低渦、切變線、高、低空急流和梅雨鋒區共同影響造成的，該地區維持高能、飽和、潛在不穩定的環境，有利於暴雨的產生中尺度數值模式（ mm5 ）模擬結果表明梅雨暴雨與中尺度渦柱、強對流運動密切相關。
  9. In loess plateau areas, dry and varied climatic condition was the main reason that resulted in the instability of soil moisture in surface layer. and because of the bad soil pedality and pore continuousness, the water in soil deep layers was difficult to supplement for that in surface layer. so, soil moisture of surface layer varied commonly and strongly

    黃土高原地區乾燥、復雜多變的氣候條件導致該區土壤表層一定深度的濕度隨時空變化非常劇烈；而且，該區土壤的結構性和孔隙連續性都比較差，深層土壤水分難以到達表層，使得土壤表層處于經常性的干濕交替變化過程中。
  10. The condition of high energy, saturation, potential instability benefits for the form and maintenance of this rainfall. the mesoscale numerical model mm5 ( v3 ) is used to simulate the heavy rain process

    採用ncep全球譜模式資料，利用中尺度數值模式mm5 （ v3 ）對2003年7月4 - 5日發生在江淮地區的一次梅雨鋒暴雨過程進行數值模擬。
  11. The third part is the analysis to uprightness instability condition. it is made that there was the ascending air current about shenyang, the hailstone forming height is between 700hpa and 400hpa, die water vapor coagulating height is between 950hpa and 900hpa from the simulated tlogp evolvement chart. cape is in favor of severe convection development

    干濕空氣間強的風垂直切變是此次冰雹強對流爆發的又一個重要觸發機制，強冷空氣到達地面強迫暖濕空氣抬升，致使對流層中低層出現強風垂直切變，強風垂直切變對強對流的發生和發展起到了非常重要的作用。
  12. At first it analyzes the bedding rock slope ' s bedded rock and its incontinuity face, and studies the stress, strain, stability ' s condition of the bedding rock slope, fully considering the cohesive force of rock layer and incontinuity face. geologic mechanics models of two types of bedding rock slope are set up, the instability coefficient of bedding rock slope under different mechanical parameters is computed, and the conclusion that the stability of bedding rock slope is relation to rock layerer, cohesive force of incontinuity face, inner friction angle and rock layer obliquity has been gotten. based on the above discussion, the thesis comes down the influence of rock layer and the incontinuity face on the bedding rock slope to incontinuity face ' s influence factors, and discusses other factors that influence the bedding rock slope ' s stability, so gains the evaluating and forecasting index marks

    本文首先對順層邊坡的層狀巖體及其中的層理面和不連續面進行了分析，對其應力應變進行了研究，得出了順層邊坡的穩定性不僅與巖體中巖石的強度有關，還與巖體中層理面及不連續面的內聚力、內摩擦角及其傾角有關；論文建立了層理面和節理面的地質力學模型，討論了其力學參數變化對邊坡穩定性的影響，並在此基礎上將層理面和節理面歸納為順層邊坡穩定性的結構面影響因素，同時討論了影響順層邊坡穩定性的其他因素，從而得出順層邊坡穩定性的評價預測指標。
  13. The strain softening of dam body and foundation is the necessary condition for dam instability. according to observation data of dam cracks, a gray cusp catastrophe model is established to judge the stability of the crack. according to the slope observation data of a certain hydropower plant, a nonlinear dynamic model is developed by means of reversion and the lyapunov exponent spectrum, and the lyapunov information dimension are calculated for judgement of the stability of the slope

    （ 5 ）基於變分原理，研究建立了能量形式的失穩準則，並說明壩體、巖基的材料具有應變軟化的性質，是大壩失穩的必要條件；並利用大壩的裂縫實測資料，建立了相應的灰色尖點突變模型，由此判斷裂縫的穩定性；根據某水電站庫區滑坡體的變形實測資料，反演其非線性動力學模型，進而計算lyapunov指數譜、 lyapunov信息維來判定邊坡的穩定性及穩定程度。
  14. Considering the present condition of foreign capital introduction, the stability of jv is an important problem for our country. the whole thesis has four chapters. the first chapter explains the related concept about stability of joint venture including the signification and the reference point of stability and instability

    本文共分為四章，第一章對合資企業穩定性問題的相關概念進行了界定，目的在於尋求合資企業穩定性以及不穩定性的含義和衡量標準，並結合我國目前的合資企業的現狀進行分析，為後面的具體分析打下了基礎。
  15. Through static and dynamic numerical analyses of geometrically symmetric and asymmetric 3pbs, the conclusion is drawn : asymmetrical dynamic stress - strain field causes the crack expanding instability of geometrically asymmetric sample but not static condition

    ?通過以上幾何對稱及非對稱3pbs模型的靜態、動態數值分析，得出結論：幾何非對稱試件裂紋後期擴展的不穩定性是由非對稱的動態應力應變場引起，與靜態條件無關。
  16. In the second experiment, the topography stirred waves in a to - and - fro current is simulated, in which the rough relationship of the stirred waves and the topography is made out, a phenomenon of high frequency instability and breaking of surface on curtain condition is detected and analyzed

    另一項實驗是借用地形的往復運動產生的波動，模擬往復流中由地形激發的波動現象，找到了往復流地形波與往復頻率和地形高度之間的初步關系，發現了由地形引起的高頻不穩定和破碎現象並給出了初步的解釋。
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