線形動物類 的英文怎麼說
中文拼音 [xiànxíngdòngwùlèi]
線形動物類
英文
ascheliminthes-
3 the comparison of mitochondrial genomes and phylogentic relationships of amphibian there still is a lack of consensus regarding living amphibian phylogenetic relationships. the most widely accepted hypothesis, based on morphological data, supports the monophyletic origin in the late paleozoic ( 300 mya ) of the three living orders in the class amphibia and a sister - group relationship between caudata and anura ( the batrachia hypothesis ) to the exclusion of the gymnophiona
3兩棲類動物的線粒體基因組結構比較和系統發生關系現存兩棲類的三個目的系統發生關系仍然沒有統一意見，最廣泛被接受的假說，是建立在形態學證據基礎上，支持現生的兩棲類三個目在古生代後期（ 300mya ）單系起源，並且無尾類和有尾類為姐妹群關系（蛙類假說） 。To meet the demands for large space and flexible compartmentation of buildings, laminated vierendeel trusses are adopted in high - position transfer story structures. first the bearing characteristics are analyzed, in which reasonable stiffness ratio of the upper chord, middle chord, and lower chord is derived. then combined with an actual engineering model ( 1 8 similar ratio ), the static loading and pseudo - dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted, in which one model adopts reinforced concrete, and the other adopts prestressed concrete and shape steel concrete. seismic behaviors are analyzed, including inter - story displacement, base shear - displacement skeleton curves, and equivalent viscosity - damping curves. a program is programmed to carry out the elasto - plastic dynamic analysis, and displacement time - history curves of the two models are derived. the test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors. it can solve the disadvantages of laminated vierendeel trusses used in transfer story structures. finally, some design suggestions are put forward, which can be referenced by similar engineering
為滿足建築物大空間和靈活隔斷要求，在高位轉換層結構中採用迭層空腹桁架結構.首先分析了其受力性能，得出了空腹桁架各構件合理的截面剛度以及布局形式.然後結合一實際工程，進行了兩榀迭層空腹桁架轉換結構模型（ 1 : 8相似比）的豎向荷載下靜力試驗以及擬動力試驗.其中一榀為普通混凝土迭層空腹桁架，另一榀配置了預應力和鋼骨混凝土，對比分析了兩模型的層間位移比、骨架曲線以及等效粘質阻力系數等抗震性能的比較，並進行了彈塑性動力分析.試驗和分析結果表明，配置預應力和型鋼混凝土的迭層空腹桁架轉換結構具有良好的抗震性能，可以成功地解決迭層空腹桁架作為轉換層結構所產生的弊端問題，最後對這類轉換層結構提出了相應的設計建議Although paleontologists had known for many years that the bones of dinosaurs contain growth lines, something like the circumferential growth rings we see in trees, it was only in the second half of the 20th century that they began to use these growth lines and other structures inside the bones to figure out how these extinct animals actually grew
雖然早在許多年前，古生物學家就已經知道，恐龍骨骼里有著類似樹木年輪的生長線；但直到20世紀後半，生長線及骨骼中的其他結構，才被用來研究這些已滅絕動物的生長情形。( 2 ) on the basis of continuity equation, momentum conservation equation, energy conservation equation, and substantial equation, coupled thm governing equations are derivated with giving up the assumption of local thermal equilibrium, adopting thermal elasto - plastic constitutive relation, taking the effect of temperature gradient on groundwater seepage ( analogous to soret diffusion ) and the effect of viscous dissipation of groundwater on temperature field of rock mass into account
（ 2 ）根據連續性方程、線動量平衡方程和能量守恆方程以及相應的物性方程推導了飽和巖體溫度場-滲流場-變形場三場耦合作用控制方程組。在推導控制方程組時舍棄了「局部熱平衡」假設，採用了熱彈塑性本構關系，考慮了溫度梯度對地下水滲流的影響（類soret效應）以及地下水的粘性耗散對巖體溫度場的影響。Aim : to analyze the mechanism, thermadynamic theoretical basis, dynamic mechanism and influencing factors of thermally induced phase separation ( tips ) in order to completely grasp the factors affecting the size, distribution and form of pores, so that the adjusted range of pore can be widened and the preparation of porous membrane can be repeated and controlled. methods : considering from the structural characteristics of tissue engineered materials, the methods of preparing porous membrane using tips technique, the hermadynamic theoretical basis, dynamic mechanism and influencing factors were analyzed, the problems and investigative directions in the future were also analyzed. tips technique is a process of phase separation of polymer homogenous solution under quenching, and it is suitable for diameter and structural form of the micropore materials prepared using tips are closely correlated with the kind and dispensing proportion of polymer attrnuant, polymer concentration and polymer molecular mass, etc. conducted, including determination of polymer - solvent system phase diagram, study of form and appearance of porous membrane of different thickness, study of form and appearance of porous membrane prepared with systems of different x, which is the parameter of polymer - solvent interaction
目的:分析熱致相分離成膜過程的機理、熱力學理論基礎、動力學機制以及影響因素，以便充分掌握影響孔度大小、分佈、形態的因素，使孔度調控范圍得以拓寬，使多孔膜的制備能重復可控.方法:從組織工程材料結構特點出發，分析熱致相分離聚合物多孔膜的制備方法及該法成膜的熱力學理論基礎、動力學機制以及影響因素.並分析實驗中存在的問題及今後的研究方向.結果:以熱致相分離法可制備聚合物多孔膜.熱致相分離法制備多孔膜是高聚物均相溶液在淬冷條件下發生相分離的過程，它適用於上臨界共溶溫度型聚合物一稀釋劑二元體系.熱致相分離法成膜的過程，可以認為是旋節線機理佔主導地位.熱致相分離法制備的微孔材料，其孔隙率、孔徑大小、結構形態與聚合物稀釋劑的種類、組成配比、聚合物濃度、聚合物分子量等因素密切相關.結論:可採用熱致相分離技術制備多孔膜，通過改變不同的成膜條件可獲得一系列不同孔徑尺寸和孔徑分佈的多孔膜材料.對熱致相分離成膜過程中聚合物-溶劑體系的相圖測定，不同厚度的多孔膜形貌研究，不同x （聚合物-溶劑相互作用參數）體系所制備的多孔膜形貌等需深人研究The analysis results indicated that the earth pressure was related to the material in properties pattern, distributed in parabolic pattern, and its value was greater than the active earth pressure
結果表明，此類擋墻墻背土壓力的分佈與填料及地基材料參數有關，一般呈拋物線形分佈；土壓力的大小遠大於主動土壓力。Institutional economics is its basic theoretical clue. the institutional approach includes : transaction cost is a basic view for housing finance institutions and a certain institution follows the principle of minimum transaction cost ; financial deepenness and financial function theories are important ways to understand housing finance institution ; a systematic institutional structure of housing finance comes from the interaction of social economy, culture and politics, and institutional bundling and embeddedness are common forms ; financial structure theory is a forceful quantitative way to analyses housing finance institutions ; minimization of transaction cost is the basic motivation for institutional transformation, and the basic ways are forced transformation and induced transformation ; equity and efficiency are basic criteria for evaluating housing finance institutions, which may implement through certain institutions while government acts as leverage between equity and efficiency. ( 2 ) multiformality and transformation of housing finance
制度經濟學是基本的理論線索，制度分析範式包括如下方面：交易成本是考察住房金融制度的基本視角，特定的住房制度安排遵循約束條件交易成本最小化原則；金融深化和金融功能理論是理解特定住房金融制度安排的重要輔助方法；整體性住房金融制度結構的形成是包括社會經濟、文化、政治等各類制度在內互相影響、平衡的產物，制度捆綁和制度嵌入是常見的形式；金融結構方法是用制度分析方法解釋住房金融制度的有力的定量分析工具；住房金融制度變遷的基本動因是交易成本最小化（外部收益內部化） ，變遷的基本方式是強制性變遷和誘致性變遷；公平和效率是住房金融制度評價的基本標準，公平和效率通過一定的制度安排可以同時實現，政府在住房金融制度中起著平衡公平和效率的杠桿作用。分享友人