離向性 的英文怎麼說
中文拼音 [líxiàngxìng]
離向性
英文
diatropism-
Epinasty ( epinastic movements ) a nastic movement that involves the curving of a plant organ away from the axis ( i. e. downward ) as a result of greater growth on the upper surface, as in the opening of flowers
偏上性生長(偏上性運動) :植物開花時由於上表面生長較快而引起植物器官彎曲並偏離軸向的向性運動(如向下) 。Thesis point out : agricultural product market information system construction lag behind on market for farm products construction, scale of market for farm products, institutionalized degree low grade factor influence market for farm products collecting and distributing and transmitting the function to information relatively. agricultural product stronger in price fluctuation, dependence and a low one getting dispersed, in the forming process of and the price of agricultural product : basic price form with market, producing area price can reflect person who consume - price etc. factor weaken price direction function of information. agricultural product supply and marketing chain does not cooperate in the play chess state that caused inside system reasonless behavior of participant and feedback mistake of message understand
指出:農產品市場信息體系建設滯後於農產品市場建設、農產品市場的規模化、制度化程度較低等因素影響了農產品市場對信息的集散和傳遞功能;農產品價格較強的波動性、相關性和較低的離散性,以及農產品價格形成過程中:基礎價格形成與市場之外、產地價格不能反映消費地價格等因素弱化了價格信息的導向功能;農產品供銷鏈的非合作博弈狀態造成內部參與者的系統非理性行為和對反饋信息的錯誤理解。In chapter 2, a simplified analytical model is presented for the analysis of the bvi mechanism, adopting the beddoes " prescribed wake model. by this model, the azimuthal location and miss - distance of the bvi and the radiation directivity of the bvi noise are calculated and discussed, and some conclusions are obtained
在第二章,使用beddoes預定尾跡模型,建立了一個用於旋翼槳-渦干擾特性機理分析的簡化數學模型,分別對旋翼槳-渦干擾位置、槳-渦干擾距離和聲輻射方向性等進行了計算和分析,得出了有意義的結果。The result shows that the pbg structure has obvious character of forbidden band at the suitable size, and can be designed to good performance microwave filter. the pbg structure have the character of high resistance, that can reinforce the forward radiation, and reduce the backward radiation, increase the directivity, improve the gain and ameliorate the performance of the antenna. in addition, the pbg structure can also greatly increase the isolation and significantly decrease the coupling between the antenna elements
研究結果表面,取合適的尺寸時, pbg結構具有明顯的禁帶特性,可以設計成性能良好的微波濾波器; pbg結構具有高阻特性,把這種特性用於微波天線時, pbg結構可以加強前向輻射,減小後向輻射,增大天線的方向性系數,從而提高天線的增益,改善天線的性能,另外, pbg結構還可以大大提高天線單元之間的隔離度,顯著減小天線單元間的耦合。Fisrt, the flow field of radial and tangential annulus with rotating flow are made by using an advanced piv system, its flow field characteristics are obtained preliminary probed. it is found that the flow field characteristics are not the same between unpermeateing flow and have permeateing flow, otherwise the flow field is compared between rotating flow and dynamic tubular membrane
首先通過採用先進的piv測試系統,對旋轉流膜器的徑向環隙和切向環隙處的流場進行了實測,初步探討了其流場特性,發現在無滲透流和有滲透流的情況下其流場並不相同,並與旋轉動態膜的分離特性進行了比較。Make use of the test commonness of driven paltes of automobile clutch, merger two kind of single test item that can be do in a set experiment, which raise to the efficiency of test, low the cost of test
汽車離合器從動盤總成試驗項目中有軸向壓縮特性測定和拖曳分離特性測定,這兩個特性測定通常是在兩臺試驗機上完成的。Furthermore, if the expansion had been accelerating, two key aspects of the early universe ? the pattern of cmb variations and the abundances of light elements produced seconds after the big bang ? would not agree with current observations
再者,若膨脹一直都在加速,那麼cmb的異向性變化,和在大霹靂之後數秒所生成的輕元素含量,這兩項早期宇宙的關鍵宇宙學預測,也會悖離現今的觀測。Prepared technical parameters were optimized by l9 ( 34 ) experiment analysis. a unique method for cleaning and drying of substrate - cleaning used by scour, drying used by infrared light was fished out by large numbers of experiment. chemical mechnism of zno thin film prepared by sol - gel technique was discussed by dta for the first time. by the measurements of sem, xrd and uvs, the thin film was analysed. the result proved that the thin film with strongly preferred orientation of c - axis perpendicular to the substrate surface which surface was homogenous, dense and crackfree was the crystalline phase of hexagonal wurtzite. the thin film was composed of plentiful asteroidal crystal which crystal dimension approximately 10 30nm. the average transmittance of thin film in visible region was above 90 %. the results of measurements else also proved that the thickness of single dip - coating was 75 240nm, this films resistivity was found to be 3. 105 102 3. 96 105 ? cm. the thickness and resistivity of thin film influenced by dope - content, withdrawal speed, pre - heat - treatment, anealing were reseached respectively
利用xrd 、 sem以及uvs光譜儀等分析方法對薄膜進行了研究,結果顯示,所制備的薄膜為六方纖鋅礦型結構,具有高c軸擇優取向性;表面均勻、緻密,薄膜材料由許多星狀晶粒組成,晶粒尺寸大約為10 - 30nm左右;薄膜可見光透過率平均可達90 % ;對薄膜厚度以及電學性能進行了測定后發現:單次鍍膜厚度約為75 - 240nm , al ~ ( 3 + )離子摻雜型氧化鋅薄膜的電阻率在3 . 015 102 - 3 . 96 103 ? cm范圍內;分別研究了摻雜濃度、提拉速度、預燒溫度、退火溫度等工藝參數對薄膜厚度和電阻率的影響。Firstly, the domestic researches, which have been reported, are introduced. then the characteristic of the system in estimation of prestressing losses is analyzed by theoretical method, and the reasons that the elimination of tendon is large and test results are not consistent are pointed. using fem software ansys, anchorage zone of pylon are analyzed
論文首先介紹了國內現階段對該問題的一些研究成果,然後從理論上分析了小半徑大噸位環向預應力體系在計算預應力損失方面的特點和造成張拉伸長量偏大且實測的數據離散性較大的原因,並採用國際權威的有限元分析軟體? ? ansys從理論上進行分析和索塔錨固區最不利節段的足尺寸模型試驗進行校驗。Directional lights are a light source that is attached to a frame but appears to illuminate all objects with equal intensity, as if they were at an infinite distance from the objects
方向性光源是附加到一個幀上的光源,但能夠以同樣的明暗度照亮所有對象,就如同從距離對象無限遠的地方照過來一樣。This light source is directional and is attached to a frame but appears to illuminate all objects with equal intensity, as if it were at an infinite distance from the objects
此光源具有方向性,並附在一個幀上,但能夠以同樣的明暗度照亮所有對象,就如同從距離對象無限遠的地方照過來一樣。The property and computing method of hausdorff distance is discussed. the using of directed hausdorff distance to match graphics in clutter background is verified. an algorithm is used to compute the voronoi surface
討論了hausdorff距離的性質以及計算方法,指出了在復雜的背景圖像中,利用有向hausdorff距離進行圖形符號匹配的適用性,並且提出了一個計算voronoi曲面的具體演算法。The operation characteristic of the new relay is analyzed in theory and verified by the simulation tests. the new relay operates with clear selectivity and high operation speed and can satisfy the demand of the protection for the ehv transmission line. the performance of the fault component impedance relay has been improved and the misoperaion of the healthy phase under cross - country fault and close - in fault have been avoided
理論分析及模擬計算表明,基於自適應補償的突變量距離繼電器有很好的選擇性和速動性,完全能夠滿足高壓線路保護的需要,顯著提高了突變量距離的性能,解決了其在大電源出口單相故障以及正反向復故障可能會誤跳三相的缺點。Microfilltration within stationmary tubular membrane elements with rotating flow is one of the most efficient method to enhance crossflow microfiltration, but its flow field characteristics are far from understanding and its filtration characteristics are also had to reseach, because the rotating flow field are superposed by rotating shear flow and axial flow and radial permeate flow
旋轉流靜止管式膜微濾是十字流強化微濾的有效方法之一,但由於其受到旋轉剪切流、軸向剪切流及徑向滲透流的三維流場作用,其流場特性有待探索,其分離特性也有待深化認識。The main topics in this thesis are as following : presenting details of the microbeam facility, mc 2000, microscope stage, venus - 1 language, modeling on the control program based on the requirements analysis, the control structure and flow chart, the main frame for the integrated program, utilizing acti vex control to implement serial communication between the computer and mc 2000, seamless integration between vb application and matlab, probing into some factors that may influence the controlling precision and providing some methods to solve them
與此同時,對實驗過程中產生的一系列實驗數據進行必要的分析,為進一步進行離子束生物工程中的誘變方向性問題和估計低劑量電離輻射的生物體效應研究提供理論依據。作者承擔了微束裝置計算機控制系統的設計工作,完成了asipp微束裝置計算機控制系統的系統設計、主程序以及樣本架控制模塊的設計;提出並實現了提高裝置通量的相關優化策略等。The safety factor method is often adopted to evaluate the slope stability, but it does not take the randomicity and discreteness of geotechnical parameters into good consideration, which often results in the conservative result and unsafe declination. however, the method of reliability can remedy the defect effectively
在邊坡穩定分析中一般以安全系數法作為邊坡穩定性的評價方法,但由於其沒有很好地考慮巖土參數的隨機性和離散性,經常出現設計值過于保守和存在不安全的傾向,而可靠度方法可以有效地彌補這一缺陷。The main content and work of the thesis includes : 1. study the pulse compression performance in range imaging , simulate the pulse compression processing of lfm signals and realize it on hhpc
本文完成的主要工作有如下幾個方面: 1 .在距離向的脈沖壓縮處理性能研究過程中,對lfm信號脈沖壓縮過程進行了模擬,並在hhpc上實現。The calculator is placed in the core position in virtual instrument, the calculator software and the test systems combine more closely. the automobile clutch from move the dish total become two functions to experiment machine is gather the machine, electronics, calculator in the integral whole of the high performance test machine, its core constitute the part is a host and test system
軸向壓縮特性測定中的壓盤狀態和拖曳分離特性測定中的壓盤狀態要求有很大的不同,壓盤實現不同狀態下的切換是雙功能試驗機必須具備的功能,論文提出了雙功能壓盤的設計方案。Secondly, the dissertations gives two array synthesis methods with aspect to circular array to cancel the ionosphere clutter, one is the circular max directivity synthesis method under condition of vertical pattern zero point restriction, the other is the circular max directivity synthesis method under condition of vertical pattern zero point restriction and efficiency restriction
然後為了對消電離層干擾,本文給出了兩種圓陣列最大方向性綜合方法,第一種是在垂直面方向圖零點約束下的綜合方法,第二種是在垂直面零點約束和效率約束下的綜合方法。Due to characteristics of white led such as large forward voltage and high temperature sensitivity, and necessity of uniform brightness requirement of the portable application, specially designed power management ic is needed
由於便攜式應用對白光led亮度均勻性的要求,以及白光led自身的正向導通電壓大、電學參數離散性大、容易受溫度影響等特點,需要設計專門的電源管理晶元來驅動白光led 。分享友人