軸取代基 的英文怎麼說
中文拼音 [zhóuqǔdàijī]
軸取代基
英文
axial substituent-
Metallophalocyanines ( mpcs ) are a kind of centrosymmetric planar organo - metallic molecules with an extensively delocalized two dimensional conjugated - electron system which show a relatively large third order optical nonlmearity, varying upon central metal atom substitution and other factors. other interesting properties of this molecule and many of its derivative products are their versatility, architectural flexibility and high environmental stability, which are very important requirements to implement photo - electronic applications
因其骨架結構特徵和可通過選擇中心離子、軸向配體和在酞菁環上引入功能性取代基等方法進行分子篩選與組裝得到具有特殊的物理化學性質和光、電、催化等功能的材料，而引起化學家和材料學家的濃厚興趣。This paper describes an aag ( attributed adjacency garaph ) based method of machining features recognition for shaft kind parts and 2. 5d parts on the acis platform, which can effectively recognize the main and assistant feature of these kinds of parts. using the class library provided by acis, all the geometrical information for defining a feature can be acquired. finally a xml neutral file describing the recognition result is provided for the later capp process and the generation of nc code
本文首先分析三維實體邊界模型的特徵識別方法及其特點，繼而採用基於屬性鄰接圖的特徵識別方法，研究了軸類零件及2 . 5維零件的加工特徵的分類及其識別，並在acis平臺上開發了相應的軟體原型系統，有效地識別該類零件的主特徵和常見的輔助特徵，且利用acis提供的類庫介面提取模型底層的幾何參數，得到定義各項特徵所需的幾何尺寸信息，最後以xml中性文件的形式輸出識別結果，為后續進行的工藝規劃、加工代碼生成提供初始數據，從而為cad / capp / cam的集成提供有效的方法。Porphyrins and metalloporphyrins are recognized as perfect host for molecular recognition owing to their diversity, their rigid molecular structures, the position and direction of the substituents on the porphyrin ring being controllable, as well as the variety of metal ligands of the metalloporphyrins
卟啉及其金屬配合物種類多，分子具有剛性結構，卟啉環上取代基的位置和方向可加以控制，且其軸向配體周圍的空間大小和相互作用的方向可通過改變配位中心金屬加以調節，因而是理想的分子識別受體。A study on the thermodynamic properties of axial coordination substitution reaction of amino - acid compounds and macrocyclic cobalt complex
大環鈷配合物與氨基酸類物質的軸向配位取代反應熱力學性質研究Thu campus is in accord with modernized chinese architecture. courtyard is an archetype in china, but with proper accommodation, it can be apply to college life style. capitalizing its strength of consolidating family cohesion but disjoining the corner space, the new courtyard is affable, encouraging communication and connection between colleges
校園的主軸為現代化的中國建築，三合院是中國建築的基本空間單元，卻很適合獨立的學院的配置，建築師擇取合院凝聚向心力的優點，以及親切的尺度，院內任何一處總能清楚看到對面來人的樣貌，並聽到說話的聲音，拉近人和人之間的關系，並將角落的空間敞開，除去不必要的防禦功能，加強系院間師生的溝通互動。According to the virtual endoscopy automatic navigation, using the two - distance field - based 3d center path finding algorithm to find the path, adopting the cylindrical approximation of tubular organs to replace the center path by several approximate cylinders, while using distance transformation that is substituted by euclidean distance to calculate the approximate cylinder ' s axis and radius, the algorithm can save much time
摘要針對虛擬內窺鏡自動漫遊技術，利用基於雙距離場的三維中心路徑提取演算法進行路徑提取，採用管狀器官的圓柱狀近似，將中心路徑用多個近似的圓柱體代替，用距離變換代替歐式距離公式計算近似圓柱體的軸和半徑，節省了大量的計算時間。The basic physical and mechanical properties, mineral composition, micro structures, swelling potential, consolidated drained triaxial shear strength, parameters of constitutive model and residual strength of the soft clayey rocks were tested in laboratory with a large number of natural samples. the changing trend of the strength about these rocks is obtained by modeling the condition of softening due to immersion. from the principles of modern soil mechanics, the structural and swelling characteristics of soft clayey rocks were analyzed systematically
本文通過現場調查，查明風化泥質軟巖的宏觀結構特徵，利用現代試驗測試手段，取原狀土系統進行特殊土室內土工試驗，測定土的基本物理力學特性、礦物成分及微觀結構、膨脹性、三軸排水剪強度及本構模型參數、軟化殘余強度，並模擬土體在長期浸水軟化后的強度變化趨勢，測試該類土的浸水軟化殘余強度。The progress in synthesis of chiral phosphinamine ligands is reviewed. their applications in asymmetric allylic substitution, asymmetric 1, 4 - conjugate addition and asymmetric hydroboration are described
本文較為詳細地綜述了軸向手性膦氮配體合成及其在不對稱烯丙基取代反應、不對稱1 ， 4 -共軛加成反應及不對稱硼氫化反應中的應用。By studying the strength behavior to these rocks, their shear strength ranges were given in different engineering environmental conditions. based on a series of triaxial tests on the soft clayey rocks, parameters of the constitutive model are provided, which are necessary in numerical analysis and engineering computation. according to the results in this study, mechanism of deformation and failure of soft clayey rocks was explored, and the data on their physical and mechanical properties were collected in guangdong
結合現代土力學原理，系統分析了風化泥質軟巖的結構特徵，膨脹特性；探討風化泥質軟巖的強度特性，給出了風化泥質軟巖不同工程環境條件下的抗剪強度取值范圍；在三軸排水剪試驗成果基礎上，提供了工程數值分析和計算所需本構模型參數，揭示了風化泥質軟巖的變形破壞機理，建立廣東風化泥質軟巖的物理力學性質特徵資料，為工程決策提供參考。The author first explains that large - scale measurement device is one of the most basic measuring methods of obtaining external trajectory data and flight status. lt is pointed out that the accurateness of the main - item axis system deviation correction ( including vertical, level and collimating axis deviation ) of large - scale measurement device error is of critical importance to the precison of measuring device ' s surveying angles. to improve its precison, the influence of axis system deviation on surveying angles must be corrected
首先說明了在現代航天靶場中，大型測量設備是獲取外彈道數據和飛行狀態的最基本的測量手段之一，指出大型測量設備測量系統誤差的主項軸系偏差（包括垂直軸偏差、水平軸偏差和照準軸偏差）改正的精確與否直接關繫到測量設備的測角精度，因此要提高測量設備的測角精度，必須對軸系偏差對測量角的影響進行改正。分享友人