配位效應 的英文怎麼說
中文拼音 [pèiwèixiàoyīng]
配位效應
英文
coordination effect- 配 : Ⅰ動詞1 (兩性結合) join in marriage 2 (使動物交配) mate (animals) 3 (按適當的標準或比例加以...
- 位 : Ⅰ名詞1 (所在或所佔的地方) place; location 2 (職位; 地位) position; post; status 3 (特指皇帝...
- 效 : Ⅰ名詞(效果; 功用) effect; efficiency; result Ⅱ動詞1 (仿效) imitate; follow the example of 2 ...
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 效應 : [物理學] effect; action; influence
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This thesis was composed in three parts : ( 1 ) the performance of the catalysts for the oligomerization and polymerization of ethylene ; ( 2 ) the comonomer effect of the in - situ copolymerization of ethylene by the bis ( imino ) - pyridyl iron complexes and metallocenes ; ( 3 ) the in - situ copolymerization of ethylene by cobalt - based catalysts and metallocenes
本論文共分為3部分:催化劑性能的評價,雙亞胺基吡啶鐵配合物與茂金屬復配催化乙烯原位共聚中的共單體效應以及雙亞胺基吡啶鈷配合物與茂金屬復配催化乙烯原位共聚。Begined with location analysis and landscape analysis of research region, the question of the developemt of small towns system has been found. through optimized ordonnance system, the optimized landscape pattern and the function subarea have been set up, to give the suggests of sustaining development
本文從分析研究區的區位效應和景觀格局入手,發現小城鎮體系發展中存在的問題,通過優化配置體系,提出最優景觀格局和功能分區,為小城鎮體系持續穩定發展提供相應的建議。Syntheses of ? ? diimine and 2 - aminopyridine transiting metal complexes bearing 2, 6 - unsym - substituents on the aryl, and investigation on the steric and electronic effects of the unsym - subatituents on the catalytic property
以2 , 6位不同基團取代的苯胺與相應的二酮反應合成系列的? ?二亞胺和吡啶胺基過渡金屬配合物。主要考察芳環2 , 6位基團立體位阻對催化性能的影響,同時也考慮基團的推拉電子效應。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The intake lag angle of the engine is optimized, and the dynamic effects of intake pipes and exhaust pipes to the improvement of motorcycle engine is applied to make the engine test performance curve approach the simulation curve
本文介紹了從進氣晚關角及進排氣的動態效應幾方面著手,不斷改進發動機的配氣相位以及進排氣系統,使發動機的實際性能曲線逐步接近計算機模擬曲線。At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength
由於準相位匹配技術有其獨特的優勢,可以利用非線性光學晶體的最大二階極化張量,如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ ( 33 ) ,其有效非線性系數高出普通非線性光學介質(如bbo 、 lbo 、 ktp )一個數量級,而且可以人為靈活設計調制周期,通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段,選擇無走離效應,解決了常規pm難以解決的問題,拓寬了非線性晶體的應用范圍,極大地提高了頻率轉換效率,已成為非線性光學材料和固體激光器的研究熱點之一。This thesis focuses the research on the theory and application of the electro - optic effect in the quasi - phase - matching ( qpm ) nonlinear optics based on periodically poled lithium niobate ( ppln )
本文旨在對電光效應基於周期性極化鈮酸鋰( ppln )的準位相匹配( qpm )非線性光學中的理論及其應用進行研究。With the decreasing in the " bite - angle " of the metallocene, the maximum activities of the systems also decreased. the structure of the iron - based catalyst had some influence on the optimum value of n ( fe ) / n ( zr )
而齊聚催化劑的電子效應對整個原位共聚體系中出現共單體效應時齊聚催化劑與共聚催化劑的最佳配比影響較明顯。By following the way of studying the nonlinear effect as a whole, the influence of the spm and xpm to the phase matching condition of fwm is studied. from the achieved analytical expression it can be seen that the phase modulation can change the efficiency of the fwm
根據綜合研究非線性效應的考慮,本文研究了自相位調制及交叉相位調制對四波混頻相位匹配的影響,在一定的簡化下得到了解析的結果。This paper compares the spatial calculation of piled wharf with simplified plane bent structures ' calculation through selected models, and analyzes the effect on the simplified transverse beam at different location of the crane, so as to obtain the distribution rule and empiric coefficient of crane load
摘要通過所選模型進行高樁碼頭結構空間計算與簡化的平面排架計算對比,分析門機不同位置時傳遞到所簡化橫梁的作用效應,從而得出門機荷載的傳遞分配規律及傳遞的經驗系數。The numerical work gives out lot of results of different aberrations. the effects of the fundamental wave ' s aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed
研究結果表明位相失配和走離效應是影響諧波位相的重要因素;像差在非線性光學過程中傳遞結果不是線性疊加的,而是非線性的。Many opo implementations are limited by problems with conventional birefiingent phase - matched techniques in available materials, such as poynting - vector walk - off, low effective nonlinear coefficient, and inconvenient phase - matching temperature and angles
常規雙折射位相匹配技術的opo有許多缺點,比如光束走離效應、非線性轉換效率較低、位相匹配溫度及匹配角的限制,阻礙了opo的發展。The ft - ir spectra of the surface - modified cds nanoparticles showed that the atom of s in the thiourea could effectively chelated with cd, which prevented s " from reacting with cd2 +. the uv - vis spectra results indicated that the optical properties of cds nanoparticles were depended on the reactive conditions
對cds納米粒子的紅外光譜分析表明:硫脲由於與cd ~ ( 2 + )離子具有較強的配位作用,可以通過與s ~ ( 2 - )離子的競爭反應,有效地限制cds納米粒子的長大。The optical limiting properties of the materials are investigated by using nanosecond laser pulses. we find that skeleton atoms and terminal ligands with larger atomic number can improve the optical limiting power of clusters with the same structure via heavy - atom effect
研究了團簇材料的光學限幅特性,發現對于相同的結構的團簇,骨架上的原子序數較大的金屬原子或終端配位體能通過重原子效應有效提高光限幅能力。Considering the characteristics of internal force and structures of simply supported pc bridges, a novel automatically step - up method ( asum ), taking into account the influence of steel arrangement, steel ratio, stress losses of tendons and time - dependent concrete modulus, to analyze creep and shrinkage effects is presented. this method accepts all kinds of expressions of creep and shrinkage, and it is easy to calculate total stress, strain of concrete and steel and deflection of bridge at any time, the expected prediction accuracy will be obtained by further dividing the time - step within duration
首先,針對預應力混凝土簡支梁橋的受力特徵和構造特點,提出了徐變效應分析的全量形式自動遞進法,可考慮截面上鋼筋位置、配筋率、預應力鋼筋鬆弛、混凝土彈性模量隨時間變化等影響,且計算式可適用於任何形式的收縮、徐變特性表達式;建立的公式可方便地求解任意時刻混凝土、鋼筋的應力與應變和跨中梁體的豎向變形,計算精度可方便地通過計算時段的細分來控制,直至給出滿意的結果。The resonance network is connected to the gate, then the output and input matching network is designed to satisfy the oscillation criteria. then harmonic balance method is used to analysize and optimize the output power and phase noise. to minimize the load pulling effect a buffer amplifier is designed to isolate the oscillator and the load
本文在場效應管fet柵極上加上諧振網路(諧振網路是通過cst模擬得到的,它是串聯反饋迴路,介質工作在te01模,對于其後的fet ,它又相當於一個帶阻濾波器) ,然後設計輸入輸出匹配電路,使電路結構滿足起振條件,之後繼續用諧波平衡法模擬和優化,使振蕩器輸出功率合適,相位噪聲很低。In the part of the experimental designs, a experimental configuration of an unstable cavity by use of two bbo crystals compensating the walkoff effect and pumped by reflection is presented, and two set of controlling systems designs of open and closed loop are also presented ; we realized closed loop controlling system of bbo optical parametric oscillator tuning system, by using american general scanning inc. ' s controller to control bbo crystal ' s rotation, and scaled the output wavelength with charge coupled device
在實驗設計上給出了利用兩塊bbo晶體補償走離效應返回式泵浦非穩腔的實驗設計,設計了開環和閉環兩套控制系統。通過使用美國通用掃描公司的掃描頭控制bbo晶體的轉動,用ccd對bbo - opo輸出波長進行標定,實現了bbo - opo調諧系統的閉環控制,相對波長調諧誤差小於0 . 04 ,並給出了354 . 7nm泵浦的類相位匹配bbo - opo輸出波長隨晶體轉角變化的理論和實驗曲線。Based on the rate - equation theory of four - level system, the expressions of threshold pump power, output power and slope efficiency are given. the influence of space distribution of pump light ( the position of focusing point, dimension of pumping light and divergence angle ) to the output characteristics are also discussed. then, by investigating the effects of thermal effect of laser crystal on the size of laser cavity mode, we obtain the mode - matching principle of high power laser diode end - pumped solid - state lasers
其中,在泵浦光的空間分佈變量中我們分別考慮了泵浦光聚焦后的腰斑大小、聚焦腰斑在增益介質中的位置以及泵浦光在介質中發散角的影響;然後我們研究了在高泵浦功率下激光晶體因吸收泵浦光而產生的熱效應所導致的熱透鏡效應以及熱致衍射損耗,通過分析它們對振蕩激光腔模尺寸的影響,得到了高功率半導體激光二極體端面泵浦固體激光器模式匹配的要求,為高功率連續單頻nd : yvo _ 4激光器的優化設計提供了理論依據。First, it leads to unproductive collocation of resources, covering direct investments and the relevant opportunity cost ; second, the rent - seeking part can establish monopolistic status if the deal succeed, which will then causes damage to social benefits and brings x - inefficiency ; what ' s more, rent seeking of firms leads to consumers " rent avoiding, and consequently, the firms will set to seek rent in a second circle just in order to protect their monopolistic status already established, circle by circle, the multiplying - effect will surely cause serious waste of social resources
首先,租金交易導致資源的非生產性配置,這不僅包括尋租過程中資源的直接耗費,而且包括這些資源的機會成本;其次,租金交易成功,尋租人得以建立壟斷地位,壟斷進而引起社會福利損失和x非效率;再次,企業尋租引發消費者的避租行為,然後,企業將為維護壟斷地位開始新一輪的尋租活動,如此循環往復,這種乘數效應必然導致社會資源的嚴重浪費Ld - pumped nd : yag, lbo ( type - i critical phase matching ) intracavity frequency doubled, blue laser at 473nm was obtained finally. under the condition of 14w pump power, high power tem00 mode blue laser at 473nm of 1. 1w was obtained. by means of inserting diaphragm into cavity, the power fluctuation and beam mode were improved ; in the experiments, the proportion of special mode matching in quasi - three - level laser was discovered, and the phenomenon were explained reasonedly
實驗上採用對熱效應不敏感的三鏡折疊腔, ld泵浦nd : yag ,類相位匹配lbo作為倍頻晶體,獲得了1 . 1瓦的連續473mn藍光輸出;採用腔內插入光闌的方法,有效克服了功率抖動,同時改善了光斑模式;實驗中發現準三能級激光器存在兩個空間模式匹配比例關系,並對這一現象給出了合理的解釋。分享友人