鏈剛性 的英文怎麼說
中文拼音 [liàngāngxìng]
鏈剛性
英文
chain rigidity-
Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased
文摘:四種羧酰化甲殼素即乙酰化、丙酰化、丁酰化和己酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少Personal protective equipment against falls from a height - guided type fall arresters including a rigid anchor line
預防從高空墜落用的人員保護設備.包括剛性錨固定鏈的定向型防墜落裝置Personal protective equipment against falls from a height - part 1 : guided type fall arresters including a rigid anchor line ; german version en 353 - 1 : 2002
防止人員從高處跌落的保護設備.第1部分:設有剛性鉸鏈On the contrary, in - parallel actuated micromanipulators have the advantages of more rigidity and accuracy, higher load capacity, and simple inverse kinematics, therefore they can be used to replace conventional serial ones to meet the rising need for higher precision, they are widely used in automation, communication, mechanics engineering, medicine field and so on
而並聯機構具有運動鏈封閉、剛性好、無關節誤差累積、運動精度高，且運動學逆解求解簡單等優點，因此非常適合於用作微操作執行器機構，廣泛應用於自動化技術、機械製造工程、醫療技術等領域，具有廣闊的發展前景。On the contrary, in - parallel actuated micromanipulators have the advantages of more rigidity and accuracy, higher load capacity, and simple inverse kinematics, therefore they can be used to replace conventional serial ones to meet the rising need for higher precision in this dissertation, position kinematics of a micromanipulator with serial - parallel structure is studied
相反，並聯機構具有運動鏈封閉、剛性好、無關節誤差累積、運動精度高，且運動學逆解求解非常簡單等優點，使得這類機構非常適合於用作微操作機器人機構，因而，研究基於並聯機構的微操作機器人系統具有現實的工程意義。After analyzing the features of total rigidity matrix and its operation of the finite element analysis, it presented a kind of linked compressed row storage with column storage index format, which improved the efficiency of both the storage and its operation of total rigidity matrix
在分析了有限元分析中的總剛度矩陣性質及其存取運算特徵之後，給出了一種帶列壓縮存儲索引的鏈式行壓縮存儲演算法，提高了總剛度矩陣元素的存儲及訪問效率。Based on analysis of the iso - rigidity of the gyro assembly, the requirement for making the joints match each other is offered, which has a guiding significance for joints assembly and selection. based on analysis of rigidity and drift error for the dynamically tuned gyro, a cross model including an inner and an outer flexible hinges is established
在對動力調諧陀螺剛度和漂移誤差分析的基礎上，建立了由內外撓性接頭裝配所形成的十字型鉸鏈模型，並利用偽剛度理論對該模型進行了分析，得出了內外撓性接頭兩鉸鏈的相對位置關系對十字型鉸鏈模型的影響曲線。On the basic of a great of literature reading and research on safety of side impact of the car, according to requirement of ece r95, applied madymo6. 2. 1 software, established simulation model of side impact of the car, researched the relationship between side rigidity of the car and passenger injury in side impact, which showed that during first impact the bigger side rigidity was, the more advantaged protection for the car and passenger in a definite range, and which drew a conclusion that the most serious part of passenger injury was pelvis during first impact. then detailed the substructure model by defining bodies, joints, contact types and contact characteristic, researched some improvement approach for side safety of the car, and then analyses a particular case, that was to say to fix vehicle door bar fender on between inner and outer plate of the vehicle door, analyzed the influence of passenger injury when the bar fender was fixed on different position, the result showed that the passenger injury was less when the bar fender was fixed on the height of vehicle door decorate bar. finally, a set of tests were performed, contrasting the simulation result with the test, analyzed the influence of the side rigidity of the car to passenger injury, which showed the test
本文在對汽車的側面碰撞安全性進行大量文獻閱讀和研究的基礎上，按照歐洲ecer95側面碰撞乘員保護法規的要求，應用多剛體動力學軟體madymo6 . 2 . 1 ，建立了汽車的側面碰撞模擬模型，研究了汽車的側面剛性對乘員損傷的影響，結果表明在「一次碰撞」中，在一定范圍內汽車側面剛性越大，越有利於汽車和乘員的保護，同時得出結論，即在「一次碰撞」過程中人體損傷最嚴重的部位是骨盆;然後通過定義各剛體、鉸鏈、接觸類型以及接觸特性，對該模型進行子結構細化工作，研究了加強汽車側面安全性的若干改進措施，並進行了一個特例分析，即在此模型的車門內外板之間安裝了車門防撞桿，分析了當車門防撞桿安裝在不同位置時對乘員損傷的影響，結果表明防撞桿位於車門裝飾條的高度時，對乘員的損傷較小;最後進行了一組側面碰撞試驗，通過試驗和模擬結果的對比，分析汽車的側面剛性對乘員損傷的影響，表明試驗和模擬結果是一致的，從而證明了模擬模型的有效性以及模擬結果的正確性。Exact design equation of half right circular flexure hinge
單邊直圓柔性鉸鏈轉動剛度的精確計算公式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。Conventional serial micromanipulators that have long open kinematics chains are not suitable for precise manipulation in microscopic scale because of their deficiencies of low stiffness and articulation error accumulation
由於傳統串聯機構形式存在著運動鏈長、剛性差、誤差累積等缺陷，且操作精度有限，不能適應mems技術發展的需要。Based on the liquid crystal polymer theory, two kinds of polyacrylates were synthesized by choosing biphenyl group as rigid nucleus of mesophase group and six methylene chain as flexible spacing group. an important chiral additive was synthesized by choosing l ( - ) ~ 2 - octanol as chiral group. mixture was made of the additive and liquid crystalline polymer, which structure was identified by ftit, " ii nmr, dsc and pom
本論文根據液晶分子結構理論，選擇聯苯基作為介晶基元的剛性核、柔性的六亞甲基脂肪鏈為柔性間隔基，與丙烯酸反應，合成了兩種丙烯酸酯型聚合物；以拆分的l （ - ） 2 -辛醇為手性基團合成了一種液晶手性添加劑，並將所合成的手性添加劑與液晶聚合物共混，採用ftit 、 ~ 1h - nmr 、 dsc 、 pom等手段對合成的化合物、共混物進行了表徵。Phenyl group introducing to cholesteryl ester molecules can enhance the phase transition temperatures of the liquid crystals and their stability. an increase in the chain length for cholesteryl dicarboxylate samples reduced stability of liquid crystal phases. while coattail - like structures on the ester group of the molecules have an adverse effect to form cholesteryl liquid crystal phase
化學結構對液晶性的影響表現為：分子中引入苯環剛性結構可以提高液晶的相變溫度和穩定性；脂族二羧酸膽甾醇酯中脂肪鏈的長度增加會降低液晶的穩定性；而末端含有燕尾結構則對液晶態的形成產生不利影響。Conventional serial micromanipulators which have long open kinematic chains are not suitable for precise manipulation in microscopic scale because of their deficiencies of low stiffness and articulation error accumulation
傳統串聯機構形式的微操作機器人由於存在著固有的運動鏈長、剛性差、存在著誤差累計等缺陷，操作精度非常有限，已不能適應mems技術發展的需要。A newly made amino acid chain folds into a distinctive shape depending on the positioning of hydrophobic amino acids, which like to cluster together away from the cell ' s watery cytoplasm, leaving hydrophiles to form the protein ' s surface
剛合成好的胺基酸長鏈，會根據疏水性胺基酸的分佈位置，摺疊成蛋白質的獨特形狀：疏水性胺基酸彼此向內聚攏，避免接觸到富含水的細胞質環境；親水性胺基酸則向外翻出，構成蛋白質的表面。Rigid chain polymer
剛性鏈聚合物Parallel manipulator has been developed based on the parallel mechanism. compared with the traditional series - connected robot, the parallel manipulator has its movement platforms actuated in parallel by several simple series connected movements chains, therefore has stronger bearing capacity, better dynamic performance and bigger ratio of rigidity load, thus are becoming more and more attractive to researchers and manufacturers. it has also become a research hot point in the manufacturing industries
基於並聯機構發展起來的並聯機器人由於其運動平臺由幾個簡單的串聯運動鏈并行驅動，與傳統的串聯機器人相比，具有承載能力強、動態性能好、剛度重量比大等優點，並因為這些優點而日益受到廣大學者及製造商的重視，現在正在成為製造領域的一個研究熱點。In the total society of china, the media ' s political mouthpiece and the power structure ' s unification adapted substantially to each other. media became an important link and part in the chain of political powers in the highly administrative system, being rigidly controlled by the uni - direction unification. social power construction, the arrangements of media system, and the controlling system altogether established the relatively balanced and stable system
本文採用歷史梳理與個案研究相結合的方法，認為中國傳媒調控機制的嬗變經歷了三個時期： 1 、改革開放前，在中國總體性社會中，傳媒的組織喉舌屬性與權力結構的單極化充分適應，在高度行政化的制度安排中，傳媒成為政治權力鏈中的一個重要環節和部門，受制於一種單向度一元化的剛性控制，社會權力結構、傳媒制度安排以及調控機制構成了相對平衡穩定的系統。This was due to three reasons : ( 1 ) baso4 particles were rigid inorganic particles, which could hinder the retraction of polymer molecules and decreased the elasticity. ( 2 ) a bad compatibility between baso4 and tpu, small interface adhesive force and the phase interface ready to separate. ( 3 ) during high content of baso4, the tenacity of filament mainly depended on tpu, so that the strength decreased with the content of tpu in filament down
這是因為： baso _ 4屬于剛性粒子，阻礙tpu大分子鏈的回縮，降低了纖維的彈性； baso _ 4與tpu相容性極差，共混時容易形成相界面，界面結合力小，受外力作用時相與相間容易發生分離，使纖維的力學性能下降； baso _ 4在高含量下，纖維強度主要由聚合物的力學性能決定，隨著baso4含量的增加， tpu所佔比例下降，從而在宏觀上表現出纖維的力學性能下降。Taken the stiffnesses as the goal of optimization, the parameters of the flexure hinges are optimized with the methods of theoretical calculation and the finite element analysis ( fea ) respectively
基於結構力學理論，推導出二維微動平臺和支桿柔性鉸鏈剛度計算表達式。分別通過理論計算和有限元分析的方法來設計柔性鉸鏈的參數。分享友人