難裂化性 的英文怎麼說
中文拼音 [nánlièhuàxìng]
難裂化性
英文
refractoriness-
High accuracy kdp crystal optics is now considered as one of optics that is the most difficult to be processed for its series of disadvantageous characteristics to optics processing such as anisotropy, soft nature, easy to deliquesce, high brittleness, sensitive to temperature change, easy to crack and so on. therefore the long machining period, low percent of pass and astaticism quality has become the bottleneck of icf technology, and the surface quality control of kdp crystal processing has become the key problem to be solved in the research of icf in our country
Kdp晶體零件是目前公認的最難加工的光學零件之一，因為kdp晶體具有各向異性、質軟、易潮解、脆性高、對溫度變化敏感和易開裂等不利於光學加工的特點，所以加工周期長、合格率低、質量不穩定成為慣性約束聚變技術的瓶頸， kdp晶體超精密加工表面質量控制問題已經成為我國慣性約束聚變研究中亟待解決的關鍵問題。This in turn introduces chinese literary theory into the global context by which chinese literary theory has shaken off the trammels of the meta - narrative of historical totality but unfortunately entered three dilemmas : the disjunction between modern anxiety and self - identification, the displacement between ontological and strategic links, and the condensation of source documents and the expansion of the applied programs
現代性西學東漸使中國文論進入全球化語境，在這一語境中，漢語批評擺脫了總體性歷史元敘事的控制，但又遭遇到三方面的兩難處境：現代性焦慮與自我認同的裂變、本體論介面與策略性介面的錯位、源文件的壓縮與應用程序的擴張。The characteristic of chemical grouting material should combind with construstion method directed by the theories, it is necessity guarantee for the good result in some special cases. by cw series material, various complicated engineerings have been successfully handled, such as the treatment of concrete fine cracks in three gorges project ( tgp ), foundation reinforcement to the fault in in three gorges project ( tgp ), and the seepage control and reinforcement for the dam base of jiangya hydropower - station. these illustrations are provided to proof the advantages of modified epoxy resin and its technique
化灌材料特性與理論指導下的灌漿工藝的全面結合是化灌處理，特別是特殊條件下灌漿效果的必要保證， cw系改性環氧化灌漿材及技術對多種復雜工況工程處理對象成功處理，解決了三峽混凝土微細滲水裂縫防滲補強、三峽工程地質斷層泥化夾層加固以及江埡電站壩基溶蝕帶防滲等一系列工程技術難題，印證了該材料及技術的先進性。It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained
文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。In this thesis, using the shoot tip, a high efficient regeneration system of cherry was constructed, and using the domesticated shoot tip as receptor, the a. tumefaciens mediated genetic transformation system of cherry was optimized by comparing main parameters of the a. ( umefaciens mediated genetic transformation
但其具有果小、核大、肉薄和裂果的缺點，而且是傳統育種方法很難改良的樹種之一，這促使人們想通過遺傳轉化技術改變其不良性狀。The carbonate reservoir rock includes many influence factors that it is through many phases structure bursts and the ancient karst to act on jointly the formation and with which the rock karst gives first place. the complicated oil field of karst cave and crack are controlled by limestone reservoir and the crevices - cave system, which have many characteristics such as vivid and great in style, irregular distribution, the limestone cave in crack and unhomogeneity of rock etc. these kinds of reservoir belong to a world difficult and extreme problem on valuation and cognition
它是經多期構造破裂與古風化巖溶共同作用形成的、以灰巖巖溶為主控因素、以儲集體控藏和縫洞系統控藏為主的溶洞?裂縫型復雜油氣藏，表現為其不規則形態和不均勻分佈、裂縫溶洞發育不均一、儲層非均質性極強等特點，認識和評價該類儲層屬世界性難題。There are three difficulties and key problems in this papaer : : the first problem is what is the dominance bearing of the leakage fractures, and how the bedrock fracture water distribute, the second is how to test the complex chemical behavior in experiment way and quantify the relative parameters, the last question is how to number the transportation of the element 90sr and its pollution to solve the three problems, this paper does lots of work and come to the prospective order, the creativities in this thesis as follow : ( 1 ) the dominance bearing of the leakage fractures and the distribution feature of the fracture water are ascertained based on rich geological data, these basal researches are very important, which are the premises to build the transport model of the fracture water in hae field
本項研究工作的難點和關鍵問題有三個： hae處置場基巖裂隙系統中，導水裂隙的優勢方位是什麼，基巖裂隙水活躍帶分佈情況如何；怎麼對核素遷移的復雜化學行為進行實驗室測試並取得有關定量化參數；怎樣數值化表現出溶質的遷移行為和污染情況本論文在解決以上三個問題上做了大量的工作，達到了預期的目的，其創新之處有以下三點： （ 1 ）通過地質資料的分析，首次提出了hae預選處置場基巖裂隙導水的優勢方位和基巖裂隙水活躍帶的大致分佈特徵。它是一個很重要的基礎性研究成果，是建立hae處置場水運動模型的前提。As the automobile industry ’ s growing, more and more aluminum alloys have used in the manufacturing of automobile and aluminum alloys replaced parts of steel planks used in automobile parts which is one of the key resources for light weighting of automobiles. but as aluminum alloys have some limitation in forming such as crinkle, fracture and difficult for welding, the industrial scale of aluminum alloys is limited
隨著汽車產業的發展，鋁材在汽車上的用量迅速增加，鋁合金取代部分鋼材成形汽車零件已經成為解決汽車輕量化的關鍵手段之一，然而由於鋁合金在傳統的沖壓成形中會出現難以消除的裂痕和褶皺，以及深沖性能比較差、焊接難度高等特點，使得鋁合金的大規模運用受到限制。Having the same mechanical character as other ceramic products, mosi2 heating elements belong to the brittleness material so that they are easy to rupture at the normal temperature, which brings some difficulty to transport and install, but it may be avoided if they were installed and used correctly
二硅化鉬電熱元件的機械性質和其它陶瓷製品一樣，在常溫下屬于脆性材料容易斷裂，這給運輸和安裝帶來了一定的困難，但只安裝合理和使用得當是可以避免的。In this paper a numerical method for equations of transport and biodegradation in the fractured media is discussed. because the equations consist of terms related to advection, diffusion, biochemical as well as the term of exchange betwen the fracture and the porous media, it is very difficult to find their solution. in order to find more efficient method for solving these equations, several numerical methods for the equations without biochemical terms are discussed first. the numerical results show that the cubic spline method can be used to solve advection flow dominated problem which often occurred in the fractured media. then, the equation with both advection - diffusion term and biochemical term are discussed. the splitting - operator is used to decouple the advection and diffusion terms with biochemical term in the equations. the way to determine the smaller time step for solving fast biochemical terms is introduced through comparing the order of characteristic time of biochemical term with that advection ( diffusion ) term. numerical simulation results show that good agreement between analytical solution and experiment result is attained
本文討論了含裂隙介質地下水污染物輸運與生物降解非線性方程組數值求解方法.方程含有對流項、擴散項、生長、死亡、吸附、解吸、趨化和孔隙與裂隙介質界面間的交換項的非線性偶合，使演算法十分困難.本文討論了無生化過程時的幾種求解方法，數值結果表明：用三次迎風插值法對常見的對流項占優勢，且場變量有較大梯度的問題較適用.在討論有生化反應過程時，利用對流項與生化反應項的特徵時間量級估算，給出了求生化過程作用子步的時間步長估算辦法.用上述方法所得到的模擬結果與解析解、無化學反應和有化學反應的實測值對比，吻合很好This kind of homogenization is very important to the investigation of concrete structures and numerical analysis of engineering. but it is difficult to use these models to study the complete failure process caused by the initiation, propagation and coalescence of cracks when subjected external loading
這種簡化對于研究混凝土工程結構及進行穩定性的數值分析是非常必要的，但是卻難于研究混凝土材料在外荷載作用下裂紋萌生、擴展及貫通而導致的由細觀層次到宏觀層次的損傷和斷裂過程。Secondly, among the single mothers, those who have the experience of divorce tend to hold that their own efforts are not useful for the improvement of marriage relations, and to believe that if crises occur in their marriages, divorce is the inescapable fate and it is the spouses " behavior that leads to the failure of marriage. thirdly, those who have lost their husbands will more idealize their marriages, and blame much more of themselves when there are some crises in their marriages. fourthly, the factors such as personality, age, years of education, years of being single will influence the perception of the underlying causes of satisfaction or dissatisfaction in marriage, and meanwhile the attribution in marriage is correlated with the swb ( subjective well - being ) and satisfaction of life
根據調查的結果，我們發現： （ 1 ）單身母親生活負擔沉重、健康狀況不佳、心理壓力大、對生活質量評價低、主觀幸福感差，是弱勢群體中的弱者； （ 2 ）單身母親群體中，有過離異經歷的婦女更傾向于認為自身的努力無助於改善婚姻關系，如果婚姻出現危機，破裂將是難以避免的，並將失敗的責任更多地推卸給外部因素； （ 3 ）喪偶組婦女在分析婚姻成敗的原因時，表現出將婚姻生活理想化的傾向，並且在婚姻出現危機時，比其他婦女更傾向于將責任歸咎為自己，而產生更多的自責情緒； （ 4 ）性格特徵、年齡、受教育程度、單身時間的長短等因素都會影響個人對婚姻成敗原因的判斷，同時，對婚姻成敗的歸因與主觀幸福感、生活滿意度都有一定的相關。In the past studies of arc - length method, the works mainly focused on the structural geometrical nonlinear analysis. in the case of the application to the material nonlinear analysis of concrete structure, especially when the concrete strain - softening behavior is included in the constitutive model, the studies are limited
而將弧長法用於混凝土結構的材料非線性分析時，由於餛凝土開裂等因素引起的應變局部化，使得求解存在一定的困難，尤其是當混凝土本構模型中包含應變軟化段時，求解困難更為明顯。分享友人