聯桿體 的英文怎麼說

The two systems, connected by inextensible link members, are assumed to resist the full external horizontal forces at floor levels.

這兩種體系借無彈性的連桿聯結，人們假設用它們抵抗各樓板的全部水平外力。

Through the using of adams ( automatic dynamic analysis of mechanical systems ), kinematics simulations, which are based on the designed new type manipulate mechanism with concentrative link lever, are executed. interferences lying in the former model are measured accurately

本論文使用機械繫統運動學/動力學模擬分析軟體adams （ automaticdynamicanalysisofmechanicalsystems ）對設計的新型推土機集中連桿操縱機構進行了運動學模擬分析，精確測量了存在的聯動角度。

Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources

基於以上考慮，論文主要從以下幾方面對地下水資源可持續開發問題進行了比較深入的探討：全面回顧了「可持續發展」概念的由來與演變，對國內外「可持續發展」的研究現狀進行了述評，並對「可持續發展」概念的科學內涵進行了深入探討；對涉及地下水資源的一些最基本的概念和命題進行了全面的回顧和評述，對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解；全面闡述了地下水資源變值系統理論的內容和意義，並與傳統的地下水資源計算評價方法進行了對比分析，結合實例具體說明了方法的應用；深入分析了地下水資源預測預報工作的極端重要性和復雜性，對傳統的地下水資源動態預測方法進行了全面的評述，指出了各類預測預報方法的特點及適用條件，對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍，以及號稱第五代計算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹，並應用於地下水動態過程線的分析，採用時間序列中的b ? j法，蒙特卡羅方法，與地下水資源變值系統理論相結合，探討了地下水動態資料分析和地下水資源預測預報的新思路；綜合分析了現今各類地下水管理模型的特點及缺陷，將數學規劃、數理統計、隨機過程等與地下水變值系統理論相結合進行地表水地下水或多水源的聯合優化調度，使模型更準確、更實用；對保證地下水資源可持續開發的內部條件和外部條件進行了分析，內部河海人學博卜學位論文前言、摘要、目錄條件主要是正確的資源觀，科學的資源計算與評價方法，可靠的資源預測預報技術，可操作的資源管理措施，外部條件主要是高層發展思路、管理體制的變革、配套的政策法規、經濟杠桿的調節、人文素質的提高、節水意識的增強及具體節水措施、人口增長的控制、水體污染的防治、生態的恢復和重建等;從宇宙科學、地球系統科學及哲學的高度審視地下水資源的可持續開發;指出了地下水資源可持續開發的進一步研究方向。

Quinic acid, used shikimate pathway in e. coli, it is necessary to extend metabolic pathway by introduction of a heterogenous gene qutb into the host cell. double specific enzyme genes arog, qutb or three ones arog, qutb, arob were co - expressed in a single plasmid pbv220 to improve the enzymes " rate - limiting reactions. modifications of e. coli chromosome by both disruption of the arod gene and directed - site insertion of the arob gene resulted in the change of carbon flow redirected into the quinic acid biosynthesis branch

利用大腸桿菌莽草酸途徑合成新的代謝物奎尼酸，須在宿主細胞引入異源酶基因擴展代謝途徑；串聯表達酶基因，同時適量增加不同種屬的多個關鍵酶酶量，改善限速反應；利用同源重組進行基因整合和基因破壞，改造染色體結構定向改變微生物代謝途徑；目的是將碳代謝流最大程度的引向奎尼酸生成的方向。

Is encoded by grb ~ ast7. the expression analysis of the concatemer was proceeded in the e. coli pet expression system

本文主要工作就是構建grb - ast _ 7串聯體，將構建后的串聯體導入大腸桿菌進行表達分析。

Neuropeptide ast2 is encoded by grb - ast3. pcr methods were tried to construct grb - ast3 concatemer. the expression analysis of the concatemer was proceeded in the e. coli pet expression system

本論文採用改進的pcr 「自身模板-引物」法進行構建方法構建grb - ast _ 3串聯體，並將拼接好的串聯體轉入大腸桿菌進行表達分析。

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我們公司是專門供應各種終端塊，交換機測試雙重座，地面座，保險絲座，三層傳感器座輕型雙座通用塊，積分塊，尼龍電纜聯系，電纜聯系，松解錨索關系自鎖式電纜接頭，光纜標記關系，軟管，電纜標記，膨脹釘/插頭，電線接頭，電纜鉗，夾釘，螺絲電線連接，自粘配合摩，螺旋帶包，導線連接器，線纜配合固定座，尼龍緊固件，電纜壓蓋，尼龍關系，電纜終端，終端，終端連接器，電線導管，預終端絕緣，電纜料，電工工具，電纜配件，塑料電纜聯系，配合鋼絲，為配合劇情，串珠配合纏上搭膠包裹，包裹配合工具，電纜，電線，終端連接器，終端塊，釘，尼龍索腺體，聚乙烯管材及快速接頭螺絲，圓釘電纜夾，自粘配合固定座，擴大釘，螺旋帶包螺桿導線連接器，銅接線端子，預絕緣電工工具，電線接頭，電纜接頭固定座，尼龍拉鏈，尼龍關系，電纜終端，預終端絕緣，電纜配件，塑料電纜聯系，配合鋼絲，為配合劇情，配合串珠包，搭包膠，配合工具包，電纜，電線，終端連接器，終端塊，釘，尼龍腺體電纜，電纜配件，線路配件等，我們提供卓越的產品和最好的服務，具有競爭力的價格

Driver ' s position : optimised layout, based on the latest ergonomic principles, considerably reduced vibration and noise, throunh insulating the operator ' s compartment from the vehicle itself by means of shock absorbes, seat adjustable to operator ' s height and weight, as well as being spring suspended and hydraulically damped. lindedouble pedal control system offers accurate reversing without. changing gear. linde central control lever operates all mast functions

駕駛室:根據人機工程學原理對駕駛室進行了優化設計.駕駛室與車身之間由減震墊隔離，大大地降低了震動和噪音，司機座下有彈簧和液壓減震裝置，並可根據駕駛員的身高和體重進行調整，以獲得最舒適的狀態.林德雙踏板控制系統具有無需切換即可實現靈敏向的功能:林德集中控制桿控制門架的提升，下隆和傾斜動作.發動機的轉速可根據提升和其它功能對輸出功率的需要而自動調節.護頂架與司機座聯成一體，並可裝配成舒適的全封閉駕駛室

Abstract : factors causing the failure of the rod string in a screw pump well include rod with minor od being used ， defects in the rod body produced in manufacturing and service ， excessive torque caused by plugging and reactive torque on the rod string ， and excessive shearing stress on the rod thread

文摘:造成螺桿泵採油井抽油桿桿柱斷裂、脫扣和擼扣的主要原因有桿體外徑選擇偏小，桿體製造或使用過程中產生缺陷，堵塞扭矩過大，反扭矩大於螺紋聯接扭矩以及抽油桿螺紋牙受剪應力過大等。

Thus, he unified the universe and held it up and looked at it, or wandered through its byways and alleys and jungles, not as a terrified traveller in the thick of mysteries seeking an unknown goal, but observing and charting and becoming familiar with all there was to know

殺害情人杠桿支點和煙葉之間尋求聯系，像這樣把宇宙看作一個整體，捧起來觀察，或是在它的僻徑小巷或叢莽中漫遊。他不是個在種種神秘之間尋找未知目標的心驚膽戰的旅客，而是在觀察著記載著熟悉著想要知道的一切。

When both genes were co - expressed in e. coli, the activity of ppsa varied from 2. 1 - 9. 1 fold comparing to control, but the activity of tkta was relatively stable ( 3. 9 - 4. 5 fold ). whatever the two genes were expressed respectively or cooperatively, both could promote the production of dahp, the first intermediate of the common aromatic pathway, but co - expression was more effective on forming dahp and screened ppt - and ptp - as more effective. the results demonstrate that co - expression of ppsa and tkta can improve the production of dahp, and what ' s more, when multigenes co - expressed, the recombinant which has coordinated enzymes activity is optimum

莽草酸途徑的最優化和整體調控基因csra的敲除正是上述改變的分子基礎，同時也為三種芳香族氨基酸的基因工程菌的構建打下了基礎; 7 .在國內外首次實現了共同途徑限制性底物關鍵酶ppsa刁無『及arog與分支途徑關鍵酶基因phea的串聯高效表達，所構建的重組質粒ptga ，其ppsa 、 tkta 、 arog 、 cm和pd的酶活分別比對照提高了3 、 2 、 2 ， 5 、 4 、 2 . 3倍，且其酶活比較協調一致; 8 .將ptga導入到篩選的基因敲除和基因替換菌株大腸桿菌31884 c甲b中，搖瓶發酵證實比以往所構建的基因工程菌株具有較高的phe產量和糖轉化率率，分別為0 . 448 %和22 . 4 % 。

Objective : construct high - level expression system of echistatin in e. coli methods : obtain amino - acid sequence of echistatin from genebank database. considering the bias of usage of 61 available aminoacid codons in e. coli, design the coding sequence of echistatin, synthesize the dna sequence chemically, get single copy coding gene and repeated two copy coding gene of echistatin. insert the sequence into expression vector pbv220, and more, we construct fusion expression clone of echistatin with pcr, identify the recombinant vector by dna sequencing

目的構建蛇毒鋸鱗蝰素（ echistatin ）的原核高效表達體系方法由genebank數據庫檢索蛇毒鋸鱗蝰素（ echistatin ）的氨基酸序列，結合大腸桿菌蛋白質合成體系對氨基酸密碼子使用的偏愛性，設計了echistatin編碼基因，體外人工合成編碼基因dna片段，通過適當的限制性內切酶位點插入表達載體pbv220 ，分別構建了echistatin的單拷貝表達克隆、雙拷貝串聯表達克隆；進一步通過pcr技術構建echistatin的融合表達基因克隆。

Defining the pose parameters of the tool as the driving dimensions and the length of actuating limbs as the driven dimensions, the configuration of the simulation mechanism was varied correspondingly with the variation of the driving dimensions and the driven dimensions ( length of actuating limbs ) could be acquired and recorded

給出了並聯機床機構簡圖和虛擬樣機實體模型，通過將數控代碼進行預處理，進行了並聯機床的虛實映射計算，即給定刀具位置和姿態的驅動尺寸、驅動桿件長度的被驅動尺寸，在裝配約束作用下驅動尺寸帶動整個機構運動，記錄桿件長度的被驅動尺寸，求解出桿長的值。

Suspend - dome is a new multiplex structure system composed of single - layer spherical latticed shell above, prestressed cables below and braces bars used to link them. compared with single - layer latticed shell and cable dome, suspend - dome can cross a larger span economically and reasonably

弦支穹頂（ suspen - dome ）是由上部的單層球面網殼，下部的預應力環索和斜索以及聯系二者的撐桿組成的一種新型的復合結構體系。

Characterizing and analyzing the dynamic properties of the humanoid - robot is one of the key problems in the research field of robot. but at present, the existing mo - deling methods of the humanoid - robot dynamics are based on the theory of traditional multi - rigid - body dynamics, and usually simplifying the system as framework with multi - rigidity poles and simplex joints. for this reason, the walking dynamic perform - ance of the humanoid - robot is pictured only approximately by these methods

精確地描述和分析系統動力學特性一直是仿人機器人研究方向需要解決的關鍵課題之一，而至今為止，針對此系統的已有建模理論和方法一般是以其結構剛性桿件簡化，以及將桿件以單純鉸鏈聯結成「骨架」為前提，建立在傳統多剛體動力學理論基礎上，這些研究成果由於結構的簡化和多剛體理論的局限，只能近似地反映仿人機器人系統的步行動力學特性。

When analyses the static force, this paper uses the boundary element method and the combined theory of mechanic system to compound the staffs system, and regards the component as elastic body, thus the static model of the hybrid mechanism is built, then, analysis their mechanic instance and distortion

在受力分析時，本文利用邊界元法和機械繫統合成的結合部理論合成桿件系統，並將構件作為柔性體，對搬運機器人混聯機構進行靜力學建模，並對其進行受力及變形分析。

Throught the comparation between supsendome and single layer reticulate, the advantages of suspend - dome was expatiated. through the analysis of lamella ’ s, rib - loop, rib - loop tilted bar type shell, the influence of lattice type to member ’ s force, joint ’ s displacement, reaction, intergral stability was studied, the suitable lattice type for suspendome was put forward

通過對聯方型、肋環型、肋環斜桿型、肋環斜桿型、肋環斜桿型弦支穹頂結構進行的分析優化比較，研究了網格形式對構件內力、節點位移、支座反力、整體穩定的影響，提出了適合弦支穹頂結構的合理網格形式。

Relationship between the link length of kinetic limb module and end output of moving platform is analyzed by finite element ( fe ) simulation of solid module through the example of 3 - puu and 6 - pus parallel micromanipulators

並以3 - puu和6 - pus並聯微動機器人為例，將實體模型進行有限元模擬分析，研究運動支鏈模塊中連桿長度對運動平臺末端輸出的影響。

Thirdly, subspace iterative method is adopted in the paper, and natural periods and modes of preceding fifteen steps of zhongshan no. one bridge are solved, dynamic characteristics of this kind of structural system are obtained, inherent link between dynamic characteristics and structural rigidity is discussed deep, the viewpoint is provided that dynamic characteristics of a structure are considered as important basis whether structural scheme is rational ; in addition, the author brings out some own views and opinions about calculational methods of prestress value of different sorts of tie rods, simulation of local rigidity region, foundation of a local finite element model of a node

另外，提出在施工階段中某些構件的應力有可能比成橋狀態的應力還大，需防止在施工狀態中構件因強度不足而破壞；再次，採用于空間迭代法，求解了拱式組合體系橋梁的自振周期和振型，得出該種結構體系的動力特性，深入探討了動力特性和結構剛度之間的內在聯系，提出了把結構的動力特性作為判斷結構方案是否合理的重要依據。此外，本文還就系桿預應力值的確定方法、局部剛度區域的模擬、節點局部有限元分析提出了作者的見解和看法，對解決類似問題得出了一些有參考意義的結論。

Problems in using screw - crane in fields and water resources engineering were analysed with examples of engineering project. based on this, a method was presented. by using double - hook screw - crane and connecting two screw - cranes by an intermediate bearing and a gear coupling, the problem of inefficiency in door - closing was solved. the double - hook screw - crane could work synchronously

以具體工程為例，在分析了螺桿啟閉機在農田水利工程中應用時存在的問題及原因的基礎上，提出採用雙吊點螺桿啟閉機，用中間軸與齒輪聯軸器把2臺螺桿啟閉機連接起來的方法，成功地解決了單吊點啟閉機閉門力不足的問題，實現了雙吊點螺桿啟閉機工作時的同步