critical phenomena 中文意思是什麼
critical phenomena
解釋
臨界現象-
Bond percolation on lattice sierpinski carpetand its critical phenomena
格點圖上邊滲流及其臨界現象 -
When temperature is very close to the temperature of phase transition, critical phenomena appear in the system. fluctuation of order parameters leads to the failure of landau theory of phase transition
但是，在充分接近相變點時，系統出現臨界現象，序參量有顯著的漲落，這導致landau理論的失效。 -
When the dimensionless governing parameters exceed some critical value, the bifurcation phenomena in the rotation pipe with rectangular and elliptical will appear and the flow structure becomes more complicated
對于矩形截面和橢圓截面管道，當控制參數較大時，流動會出現分叉現象。 -
On the basic of former research men ' s experience, 18 experimental members ( including 9 simple beams and 9 restrained beams ) are designed and tested. in the experiment, phenomena are observed and record by taking photos in the whole process from the first crack appears to test members crash completely, experimental data is attained including load values of crack - appear load, critical load and terminal load, stress values of reinforcing steel bar stress, compressed concrete stress and beam flank stress and values of deflection etc. by analyzing the crack ' s appearing and developing form and stress values of concrete and steel bars, the crash modes of test beams are defined ; shearing force - deflection curves are contrasted and analyzed ; the effects on shear strength of the three factors as shear span ratio, concrete strength and restraining moment are also analyzed
借鑒已有試驗的經驗，本文設計和完成了對18根超高強混凝土無腹筋梁（包括9根簡支梁和9根約束梁）在集中荷載下抗剪強度的試驗，觀察了試件從裂縫出現到完全破壞失去承載能力全過程的試驗現象並通過拍照進行記錄，獲得了試件的斜裂縫出現荷載、臨界斜裂縫荷載和極限荷載等荷載值和縱筋應變、混凝土受壓應變和梁側混凝土應變等應變值以及撓度值等。 -
Renormalization group and critical phenomena
重整化群與臨界現象 -
Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research
接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。 -
With the decoupling average technique and high - temperature approximation, we obtain the graph of the system magnetization evolving, which clearly exhibit the critical slowing phenomena of xy model near the phase transition region
運用退耦平均技術，在高溫近似下數值模擬得出的平均磁化強度的時間演化，清楚地展示了xy模型在相變發生區域內的臨界慢化現象。 -
The history of phase transition and the critical phenomena in nuclear systems is introduced and the main theory of nuclear phase transition is briefly reviewed
另一方面，混沌動力學、分形等非線性學科在近年來的長足發展，也為人們認識世界提供了另一強有力的方法。 -
Plasma erosion opening switch ( peos ) is a critical device used in the pulsed power apparatus for modern radiation physics and inertial confinement fusion research. there is no perfect theoretical description or model for pegs presently, and the switching phenomena differ from system to system. in addition, there is still much to do for the improvement of performance
等離子體融斷開關（ peos ）是現代輻射物理和慣性約束聚變等研究領域中脈沖功率技術的關鍵部件之一，其工作機理目前尚無完善的理論解釋和物理模型描述，實驗現象因裝置的多樣性而差別較大，開關性能則有待進一步的提高。 -
In the honeycomb lattice with random transverse field, a smaller crystal field cannot change the percolation threshold of critical transverse field. the reentrant phenomena shall appear at the range of certain random concentration when the transverse field takes a larger value, while the reentrant phenomena do not occur and when the transverse field take a smaller value
隨機橫場作用下的蜂窩格子中，較小晶場的存在並不能改變臨界橫場閾值；取較大橫場值時在某些隨機濃度范圍內出現重入相變現象，而取較小橫場值時則沒有重入現象產生。 -
" for his theory for critical phenomena in connection with phase transitions
提出重整群理論，闡明相變臨界現象 -
Phase transition and critical phenomena in condensed matter physics and statistical physics is a quite important field of inquiry
相變和臨界現象是凝聚態物理學和統計物理學中十分活躍和重要的研究領域。 -
Attempts to link earthquakes and critical phenomena find support in the demonstration that rupture in heterogeneous media is a critical phenomenon
嘗試將地震和臨界現象聯系在一起，在破裂在不同種類介質中是一個臨界現象的演示中找到依據。 -
Renormalization group method which calculates fractal dimension theoretically is the most useful tool when we study critical phenomena of phase transition
重整化群方法是研究相變的臨界現象最有力的工具，它是一種由理論求得分形維數的方法。 -
Considering the relationship between the phenomena of critical heat flux ( chf ) and the safety of nuclear reactor, the research of chf on experiment and theory has been carried in detail
由於臨界熱流密度（ chf ）與反應堆安全密切相關，所以人們從實驗和理論上都已經對該現象進行了廣泛的研究。
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