連桿比 的英文怎麼說

中文拼音 [liángǎnbǐ]
連桿比 英文
ratio of crank radius to length of connecting rod
  • 連 : Ⅰ動詞1 （連接） link; join; connect 2 （連累） involve （in trouble）; implicate 3 [方言] （縫） ...
  • 桿 : 桿名詞（桿子） pole; staff
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 連桿 : [機械工程] link; connecting rod; perch; go between; column; connecting bar; crank guide; link lev...
  1. The results also revealed that it was a reasonable choice to use carbenicillin as the antibiotics of inhibiting growth of remnant agrobacterium after co - culture, and when hygromycin was used as the selective agent, continuous selection at low concentrations ( 50 ~ 150mg / l ) produced the highest numbers of transgenic plants without escapes

    試驗表明，在農桿菌介導高羊茅遺傳轉化中，抑菌劑宜選用梭節青霉素;以潮黴素作為選擇劑時，採用低濃度（ 50一15om留l ）連續篩選的方式比較合適，在該方式下，獲得的轉基因植株較多。
  2. In this paper, first strand cdna of 3abc gene was synthesized using template rna extracted from cells infected with fmdv. the complete 3abc gene about isoobp was amplified by pcr and ligated into pgem - t easy vector. after transforming e. coli dh5 a, ampicillin resistant colonies were isolated and plasmid dna was prepared and analyzed by restriction analysis and pcr. presence of the full length 3abc gene was verified by nucleotide sequence analysis and the plasmid containing the expected sequence was named as pgem - 3abc. comparing the aquired sequence of 3abc with that of reference strains, the homology is more than 99 percent. the pgem - 3abc was digested with sal i and bgl ii and ligated into xho i and bgl ii - digested expression vector ptriex - 4 neo. lt was identified by restriction analysis and pcr and sequencing that this fragment had a 17bp deletion hi the nucleotide sequence 708bp of 3abc gene, which happened to form a terminator codon behind 3ab gene, but it contained the complete open reading frame ( orf ) of 3ab gene. positive clones were selected and induced with lmmol / l isopropyl - d - galactoside ( iptg ), bacteria were detected by sds - page and western blotting after properly treated. the results showed that the 3ab gene expressed successfully in e. coli and 33. 5ku fusion protein can be recognized by the positive bovine serum of fmdv. the amount of target protein is over 26 % of the total bacteria protein by gel thin layer scanning analysis

    擴增產物連接到pgem - teasy載體中，轉化大腸桿菌dh5菌株，篩選氨芐青霉素抗性菌落，提取質粒經酶切鑒定、 pcr分析以及確證性測序證明，所克隆的1500bp左右的片段含有完整的3abc基因，與國外參考序列相比，同源性在99以上。將重組質粒pgem - 3abc和表達載體ptriex - 4neo分別用sal和bgl與xho和bgl消化后，亞克隆3abc基因至原核表達載體ptriex - 4neo中，通過酶切鑒定、 pcr擴增以及序列分析，發現克隆到ptriex - 4neo載體上的片段於3abc基因708bp處出現了17bp的缺失，碰巧在3ab基因后形成一終止密碼子，但3ab基因的閱讀框架完整，選出含有3ab基因完整閱讀框架的陽性克隆，用iptg誘導表達，收集菌液進行sds - page電泳、 westernblotting分析，結果表明， 3ab基因在大腸桿菌中成功表達，其表達產物為分子量33 . 5ku的融合蛋白，並能被口蹄疫病毒陽性血清識別。經薄層掃描分析，表達量占總蛋白量的26以上。
  3. This paper presents the structural design of the main bridge of lhasa river bridge, makes a deep - going study of the key techniques for design of the bridge, such as the reasonable span length ratio of each span of the 5 - span girder and arch hybrid structure, mechanical behaviour of the dual arch ribs, and section of the continuous girder tie beam, and also works out rigidity and stress conditions of the continuous girder tie beam and stress conditions of the concrete - filled steel tube arches of the main bridge

    摘要介紹了拉薩河特大橋主橋結構設計情況，對於五跨梁拱組合橋梁各孔跨合理的跨度比、疊拱的受力行為及連續梁系桿截面形式等設計中的關鍵性問題進行了深入的研究，給出了主橋連續梁系桿的剛度和應力情況、鋼管混凝土拱的應力情況。
  4. It is believed, through analyzing, that the ratio radius of the crank to length of the link is importantly influential in the reed motion about 4 - linkage beating - up mechanism, and, that the specific property of slow motion at back center is mainly decided by the second 4 - linkage mechanism on the 6 - linkage beating - up mechanism

    對連桿機構運動分析認為：四連桿打緯機構的曲柄半徑與牽手長度之比是影響筘座運動的重要因素，六連桿打緯機構的后心運動緩慢特性主要由第二個四連桿機構決定。
  5. The reassigned smoothed pseudo wigner - ville distribution ( rspwvd ) is introduced, which has less interference and higher resolution than other time frequency distributions like wigner - ville, choi - williams etc. it is used to detect the multi - knocking of engine such as cylinder, piston pin, valve, crank bearing, connecting rod bearing and jib knocking. a new fault diagnosis technique based on the rspwvd for the engine multi - knocking problem is proposed. by comparing the bispectrum and bicoherence of the gear vibration signals, it is demonstrated that bispectrum has an advantage over bicoherence for feature extraction of such signals

    第四章首次引入一種重分配方法，得到干擾項少而解析度高的重分配平滑偽魏格納維爾分佈（ rspwvd ） ；對發動機曲軸主軸承響、連桿軸承響、活塞銷響、活塞敲缸響、氣門響和挺桿響等常見機械異響故障振動信號特徵進行了全面地比較分析；通過對各種異響故障特徵信號的分析研究，提出基於rspwvd的發動機多異響故障診斷策略，利用該策略可以準確識別不同的發動機異響故障。
  6. The worm - drive is widely used in modern industry, especially the ordinary cylinder worm - drive in machine tool manufacturing sector. main disadvantages of worm dives are lubrication and wear problems due to relatively high sliding at the tooth contacts. the ordinary cylinder worm - drive has almost become an exclusive selection in general low speed transmission work - platform and continuous graduation mechanism

    蝸桿傳動具有傳動比大、體積小、運轉平穩、噪音小等特點，在現代工業中應用非常廣泛，在機床製造業中，普通圓柱蝸桿傳動的應用尤為普遍，並且幾乎成了一般低速傳動工作臺和連續分度機構的唯一傳動形式。
  7. A general stack equation of mobile robot based on analyzing the motion of planar motion object and the mathematical models of four different kinds of common wheels is developed, accordingly, the mobility of mobile robot is addressed and the forward and inverse solutions to speed for specific configuration driven by differential speed are derived. utilizing the muir and newman convention, the description of the posture transformation matrices between different coordinate frames and the solution for the speed of point located on these frames are introduced. according to posture estimation, a more accurate method, dead reckoning algorithm, is developed for a specified configuration characterized by differential speed motorization, and simulations of this algorithm and other traditional methods are carried out using matlab while traversing a circular path

    本文對兩輪差速驅動移動機器人的運動學及其本體緩沖設計進行了探討，在對平面運動物體運動分析的基礎上結合四種常用車輪的數學模型，推導出了一個通用的移動機器人堆積方程，在此基礎上分析了移動機器人的移動能力、並針對兩輪差速構型推導了速度正解與逆解；使用muir和newman的運動學建模方法，推導了移動機器人上點及連桿坐標系位姿、速度變換關系矩陣及求解方法；在移動機器人位姿識別方法中結合差速驅動構型對航位推演算法進行了分析：推導了一種理論精度較高的航位推算演算法，並使用matlab對其與傳統的推算演算法在跟蹤圓弧軌跡情況下進行了模擬；最後針對本文所研究的機器人給出了一種比較系統、可靠的緩沖結構設計思路，較好地解決了移動機器人作業過程中外界因素及本身設計中引入的各種不確定誤差問題；本論文研究成果已在本實驗室所開發的樣機上得到實現，經過應用與考核證明其中的分析與設計是切實可行的。
  8. Approaches must be carried to deal with this problem. in this paper, metal material, nylon plastics, phenolic cotton cloth laminated tube and 3 - d composite material is respectively used as one of the linkages. we compare these four systems to test the performance of light material in mechanism

    為此，本文分別採用金屬、尼龍棒、酚醛棉布模壓棒以及三維編織復合材料製作機構中最長的連桿構件，通過四套系統進行對比實驗研究，檢驗東華大學碩士學位論文機械01碩呂繼超指導教師:王生澤輕質材料對于優化系統控制性能的影響。
  9. This paper deals with the following three topics with regard to the control of multiple manipulators : 1. deprive the kinematics and dynamical equations of two manipulators with identical structure on the basis of geometry theory, one of which has two links, giving the inverse solution to the kinematics of the system which consists of the manipulators and the grasped object ; 2. by use of load - distributing, design a controller coordinating multiple redundant manipulators whose parameters are known

    基於微分幾何理論推導出兩個具有相同結構的二連桿機器人的運動學逆解及與物體所成系統的動力學方程； 2在假設由多個冗餘機器人與物體組成系統的動力學模型確知的前提下，利用負荷分配法，設計了一種不僅能使關節力矩優化且能按照一定比例分配負荷的控制器，解決了以往控制器的一些缺陷，即忽視各個機器人的實際承載力，導致一些負荷力小的機器人卻必須承擔較大的負載，最終損壞機器人； 3
  10. Against classical dynamic balancers of crank and connecting rod mechanism, the test system has virtue hereinafter : ( 1 ) supporting structure adopt projecting beam uniquely. the signal of vibration provoked by crank and connecting rod mechanism revolving is concentrated to strain beam. the signal is not only abundance, but also easy to test and the test sensitivity is great

    與傳統的曲柄連桿機構動平衡機相比，這種測試系統具有以下優點：支承結構採用獨特的懸臂梁式結構，曲柄連桿機構在運轉過程中振動規律完全映射到支承梁的應變上，振動信號豐富且易測試、靈敏度高。
  11. The greatest feature of this valve is that the ability to take advantage of pipelines within the medium pressure promote hemisphere, therefore, its sudden opening and closing power is stronger than any other type, with such advantages of no friction, no wearing and long life of use

    該閥的最大特點是能藉助管線內的介質壓力推動半球，所以它瞬間啟閉力比任何一類球閥都輕快的多，同時在同步連桿和拉簧的作用下，使兩半球離開閥座密封面，然後再旋轉球體，閥門的啟閉過程中有密封面無磨擦、無磨損、使用壽命長等優點。
  12. Its drive linkage is assembled, and need not be welded or cut on the construction site, so the construction period is reduced on the site and maintenance and dismantling is also easy

    傳動連桿採用裝配式，在施工現場不必進行切割或配焊，縮短了產品在運行現場的施工期，檢修與解體也比較方便。
  13. The correlation analyses of the performance between the cam - drive mechanism reciprocating pump and the crack - connecting rod reciprocating pump

    凸輪機構往復泵與曲柄連桿機構往復泵性能對比分析
  14. But the sequent matters will be serious, such as the variety of working object, the difference in workspace and the random assembly among modules ( namely the topological relationship and the infinite combination of joint modules and link modules ), which make modularized design be more inconvenient than common devise

    但隨之而來的問題是任務對象的千變萬化、工作空間的不同，加之模塊機器人的可隨意組合? ?即模塊機器人的拓撲關系、模塊關節及模塊連桿的無窮組合，使模塊機器人的設計比一般的機器人要困難得多。
  15. Contrastive tests of damping aluminum - alloys, zinc - alloys and 45 # steel are carried out at the case of equal stiffness. the test results show that when the rocker bar is made of damping aluminum - alloys or damping zinc - alloys, the strain amplitude at the middle point of connecting bar is half of the one when the rocker bar is made of 45 # steel

    在等剛度條件下對鋁基、鋅基阻尼合金和45鋼阻尼減振作川進行了對比實驗，實驗結果表明搖桿為鋁基和鋅基阻尼合金材料時，連桿中點動態應變曲線幅值只有45鋼時的一半左右，而且隨著曲柄轉速的提高，阻尼合金的減振效果更加明顯。
  16. Hydraulic fluid power - cylinders - bore and rod area ratios

    液壓流體動力.汽缸.汽缸內徑和連桿截面比
  17. Design and key technique of model ls4 - 2000a straight side four point press with multi - link have been introduced and the advantages and economic benefit of such machine have been expounded with comparison of other presses

    摘要介紹了ls4 - 2000a型閉式四點多連桿壓力機的設計和關鍵技術，並通過與其他壓力機比較，闡述了其先進特點和較好的經濟效益。
  18. An experiment on the testbed of a two - link flexible manipulator show that the neural - network plus fuzzy pd control with tip vibration has better performance than others ( simple pd control and fuzzy pd control ). it not only achieves accurate tip positioning but also guarantees the fast response

    模擬實驗表明，對于柔性連桿機械臂系統，採用神經網路+末端振動模糊pd控制方案比單純的pd控制和模糊pd控制方案效果好，並且可以有效地實現對柔性臂位置控制的準確定位和快速響應。
  19. The accuracy calculation for linkage mechanism with constant transmission ratio by optimal approximation

    最佳逼近法求解定傳動比連桿機構的精度預測
  20. The ratio of the length and the radius of bolt boles is 6 1 in 2v 6 / 8 air compressor and the holes belong to little and deep ones, there are many problems, such as the guiding, chip explusion and cooling, during the manufacturing

    某廠生產的2v 6 / 8型空壓機連桿螺栓孔長徑比為6 1 ，屬小深孔，加工時存在著導向、排屑、冷卻及潤滑等問題。
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