有向多角形 的英文怎麼說
中文拼音 [yǒuxiàngduōjiǎoxíng]
有向多角形
英文
oriented polygon-
The feathers attached to the arms and the tail evidently possess the structures of " modern feathers ", which consisting of the central shafts ( rachis ) and parallel barbs. dromaeosaurids are unusual group of maniraptoran theropods. they share many similar or the same features with archaeopteryx or other primitive birds, such as : u - shaped furcula, uncinate process, laterally facing glenoid of shoulder girdle, comparatively long forelimb, large semilunate carple, retroverted pubis, ascending process of astragalus, and " modern feathers " with rachis and barbs etc. these facts indicate not only that dromaeosaurids had developed many bird - like characters in course of the advanced maniraptorans toward birds, but also that there seemed to be the co - evolutionary trend between the feathers and the skeletal bones
奔龍類是一類較為特殊的手盜龍類（ maniraptora ） ，它具有許多與始祖鳥archaeopteryx甚至其它早期鳥類相似或接近的特徵，主要表現在：叉骨u形與始祖鳥和孔子鳥類的相同，背肋鉤狀突在孔子鳥類和個別反鳥類中也存在，肩臼窩絕大部分指向側方類似於始祖鳥，肩胛骨與烏喙骨間的夾角非常接近90也和始祖鳥的相似，前肢從比例上講顯得較長，大的半月形腕骨使肘部能向側方折過來，恥骨伸向後下方，距骨上升突與原始鳥類中的為同源結構，羽毛已有顯著的分化且具備了現代羽毛的基本結構等等。Through the use of the multivalued directed angle and its related notions, it is given the sufficient and necessary conditions when the three chordal circles based on the three sides of a triangle as their chords share the same point
摘要利用多值有向角及其相關概念，給出了以三角形每邊為弦各作一圓所得三圓共點的充要條件，推廣了已有結論。It is mainly characterized in the triangular - lanceolate leaves which are green but white with dark green reticulation along the midrib and more or less truncate at base ; the flowers are erect on the rachis and half - opened ; the lip is tripartite, glabrous, more or less urceolate in side view ; the hypochile is saccate, ovoid and big while the epichile is relatively tiny, reflexed, undivided and transversely oblong or subreniform
本種之主要特徵為： ?呈三角?披針形， ?面?色，沿中?有白色斑塊， ?基多少呈截形；花直?于花軸，半張；唇瓣呈三段? ，平?無毛，側視時多少呈壺型；基段片囊? ， ?形，巨大，先段片相對微小、反卷， ?再細?而呈橫向橢圓形。Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義If many forces are acting simultaneously in different directions on any body, the direction of its motion will not correspond with any one of the forces, but will always follow a middle course, the summary of them, what is expressed in mechanics by the diagonal of the parallelogram of forces
如果同時有許多各種不相同的力作用於某一物體，該物體運動的方向不可能與任何一個力的運動的方向相符合而總是平均最短的方向，即力學所說的平行四邊形的對角線。Abstract : this paper gives a formula of directed area for pedal polygon of polygons inscribed in a circle. using this formula, we obtain some fixed value theorems for this kind of pedal polygins. thus some results of pedal triangles are generalized
文摘:給出圓內接多邊形的垂足多邊形的有向面積公式，並利用該公式獲得圓內接多邊形的垂足多邊形和正多邊形的垂足多邊形的若干結果，從而推廣了垂足三角形的一些結論。Her appearance belongs to the fire type, has sharp type of face, there are more black than white in the pupils of her eyes, both eyes are wide apart, the ears are lower than the eyebrows, her earlobes are thick and broad, protruding internal earbone, short nose, wing of the nose is frail and a little protruding, her mouth forms a line when it is closed, the sides of her mouth is slightly turn downwards, the thickness of the upper and lower lips is even, her cheekbones are not high, and the law grain is profound
面相屬火，尖形臉，額頭高且突，下巴尖，眼珠黑多白少，兩眼間的距離開闊，眉陵骨凸，耳低於眉，耳珠厚和寬，內耳骨凸出，鼻短、鼻翼單薄和有點外仰，人中平滿欠缺凸下溝紋，嘴巴緊閉時成一線，嘴邊兩角微微向上彎，上下唇的厚度均勻，顴骨位置不高也不大但法令紋深長。To understand and deal with deflation becomes a new task. deflation has been paid close attentain to by academic circles and govern ment departments around the globe. on the basis of investigating the related literature of deflation at home and abroad, the auther of this paper puts emphasis on studying china ' s deflation, including its cause of formation, mechanism of the formation and effectiveness of monetary policy during deflation by qualitative and quantitative analyses, positive and normative analyses, theoretical analysis and case confirmation ; then points out the orientation of china ' s monetary policy by raising the efficiency of monetary policy in the future and avoiding deflation
本文在分析研究國內外在通貨緊縮判斷標準、形成機理、治理對策等方面研究方法及研究現狀的基礎上，採用實證分析與規范分析相結合，定性分析與定量分析相結合，理論概括與實踐歸納相結合的方法，從多方位、多角度對產生中國目前通貨緊縮的原因進行分析，從理論上梳理出中國目前通貨緊縮形成的邏輯過程，並對通貨緊縮時期貨幣政策的效果及未來貨幣政策的取向進行了深入分析和有效探索。In the present research, therefore, identification of the shape of permeable sands seems very important. in a word, it ' s of great significance in the theory and in practice to find out the location, shape and extending direction of lacustrine delta and characteristics of different microfacies in the upper triassic yanchang formation
因而，在當前各項研究中，弄清良好的滲透性砂體的形態及其展布就顯得十分重要，即精確確定上三疊統延長組的湖泊三角洲砂體形態、展布方向及其沉積微相特徵，進一步了解砂體的物性特徵，對指導鄂爾多斯盆地中生界油氣的開發具有重要的理論和實踐意義。In this paper, through the research of the mental model of agent and the analyses of a few kinds of " belief - desire - intention " ( bdi ) model of agent from the logical view, we explain the agent theoretically. on the base of analyzing the organ structure of agent, we put forward the kernel agent concept. the kernel concept abstracted from common properties of agent, contribute to construct agent and multi - agent system. we have also studied the kqml ( knowledge query and manipulation language ) and communication mechanism of agent, and bring forth the ontology researching will become the emphasis in construction of abstract knowledge exchanging between the agents. at last, we construct a multi - agent system, which exchange kqml message by a mobile agent, by the development tools of agelt and jkqml
當前，對agent和多agent系統的研究正在掀起熱潮，是當今計算機科學技術領域、信息工程領域和網路與通信領域十分活躍的前沿研究方向之一。本文通過對agent心智模型的研究，從邏輯學的角度分析並總結了幾種agent 「信念?願望?意圖」 （ bdi ）模型，在理論上對agent進行了解釋。總結了現有邏輯模型存在的問題，提出去掉規則n形成的一種非正規模態邏輯的語義上的新的解釋，解決了「邏輯全知」問題和由此帶來的問題，避免了一般非正規模態邏輯系統語義解釋對agent的bdi描述的弱點。The methods of displaying slice about the three - dimensional emulation model are studied. they are follow three methods. the method to make multilayer horizontal slice ; the method to make multidirection and multiangle slice the method to make single oil layer display in three space. by above three methods the oil engineer can apprehend the underground oil reservoir structure very clearly
利用計算機圖形圖象處理技術，研究對地下油藏模擬模型的切片顯示的方法，其中可完成多層水平片、可使人們在縱向空間對油藏有清晰的認識，完成多方向、多角度對油藏的垂直切片，使人們對油藏的整體構造有清晰的認識。The old stratum structure has been broken up, and a reasonable dynamic stratum structure is gradually taking shape. sociologists have done many researches in response to the rapid changes in the social stratum structure. they have made different judgments and conclusions, such as " stratum theory " by lu xueyi, " segmentation theory " by li qiang, and " fracture theory " by sun liping, etc. stratum theory holders think that modern social stratification structure has formed in china society today, and the structural elements showed a stable trend ; segmentation theory holders think that social structure at the present stage can be divided into different sections, and they are reorganizing
地位不一致視角有效地解決了社會學界對于當前中國階層結構形成的理論爭辯，並根據社會成員各種地位維度的一致性程度提出了上層定型化、中層碎片化和下層凝固化的判斷;地位不一致視角有效地解釋了現實生活中日益出現的地位矛盾現象，分析了地位不一致形成的社會成員行為取向與相對剝奪感;地位不一致視角有效地揭示了改革開放和市場體制形成以來階層結構的變遷，這種多元地位維度的增加以及維度間不一致性的提高具有深層的形成機制並將對未來階層結構的建構發揮積極作用。A new multidimensional distance vector ( mdv ) is defined based on corners of airplane outline, each airplane has its mdv different from others
根據飛機形狀角點之間的距離，定義了一種新的多維距離特徵向量，不同飛機具有不同的多維距離向量。Firstly, object - oriented programming method and relation database technology are used to realize protective information management, with a multiple tires " client / server architecture. using it, the technical staffs can check all kinds of reports, fault waves and setting values of protection. secondly, based on protective principles of ta21 series protection devices, protective function is simulated by using object - oriented technology
首先，本文將面向對象方法和關系數據庫技術結合起來，採用psmis的多層客戶?服務器體系結構實現對保護信息的管理，以便供電段技術人員查看保護裝置的整定值、各種報告、故障錄波（系統不僅能顯示波形，還能動態顯示波形每一點的峰值、有效值、相位，甚至阻抗值及阻抗角、諧波含量等） 。Dbf algorithms for 2d planar array based on the algorithms for 1d array are discussed in this paper. the author ' s main contributions include research of the adaptive digital beamforming algorithm, which control both amplitude and phase of each array element : diagonal loading qrd - smi algorithm. research of two phase - only dbf algorithms : small phase perturbation restriction algorithm and maximum gain of the expected direction restriction algorithm
面陣的數字波束形成演算法是面陣dbf技術的關鍵，本文在現有的一維數字波束形成演算法基礎上，研究了二維面陣的數字波束形成演算法，主要工作有：面陣的幅度相位全控制自適應數字波束形成演算法? ?對角加載qrd - smi演算法的研究；兩種面陣唯相位（ phase - only ）數字波束形成演算法? ?小相位擾動約束演算法和期望方向增益最大約束演算法的研究；面陣的數字多波束形成演算法? ?二維fft多波束的研究，以及fft在可編程邏輯器件中的實現。Frequency using wavelet theory, another is multi - channels based on gray. the first method is based multi - scale decompression using wavelet theory, it extract gray feature from each channel to form feature vector, it can distinguish objects, but this method not have invariant property when object rotate
基於小波的頻率多通道是從小波多分辨分解的角度，提取各頻率通道的灰度特徵形成特徵向量，該方法可以很好的區分目標，但不具有旋轉不變性。With the help of this program, this paper does research on the moved backwards of the slide surface, lengthening the anchor section, the soil nail ' s total force, gets conclusion about relations between the soil nail ' s length and the slope ' s grade, height, soil ' s mechanical parameter ; relations between soil nail ' s total force and coulomb soil pressure. with the help of the large multiuse finite element program ansys, this paper analyzes the soil nailing in one - step ' s slopes, in two - steps " slopes, puts the emphasis on the axis force ' s distributing along the soil nail at each rows, the effect of both the excavating mode and the original slope figure to the axis force of the soil nail, the one another effect between the upper - step slope and the nether - step slope in the soil nail ' s axis force, gets conclusion about the design of soil nail at the first low, different slope body is the same with different excavating mode, the original slope figure has more effect to some than others because of the slope body, the reasonably design of the step width in two - steps slopes, the two - steps excavating and retaining has more virtue than the one - step ' s. through soil pressure analysis this paper does research on the differences and the links between the coulomb soil pressure theory and the rankin ' s, the vertical pressure at the slope surface when the slope surface is inclined and the retaining wall is rough, the soil pressure ' s distributing behind the panel, gets conclusion about the effect of both the slope body inner stability and the slope surface local stability to the soil pressure
通過分析比較，論證了對數螺旋線型比圓弧形作為邊坡的假設滑裂面具有較多的工程優點，並為此編制了一個採用極限平衡法分析土釘支護的fortran語言程序，以此作工具對滑裂面的后移、土釘錨固段的超長、土釘總力的大小等方面作了研究，得出了有關土釘的長度與邊坡的坡角、坡高、土體力學參數的關系、土釘總力與庫侖土壓力間的關系等結論；採用大型通用有限元數值分析程序ansys分別對採用土釘支護的一階邊坡、二階邊坡進行分析，重點是研究各排土釘的軸力分佈規律、開挖方式及原始邊坡形態對土釘的軸力的影響、上下階邊坡在土釘軸力方面的相互作用，得出了有關第一排土釘的設計問題、不同類型的土體應適用於特定的開挖方式、原始開挖出的邊坡形態對一些類型坡體的邊坡土釘支護有較大的影響而對另外一些影響不大、二階邊坡臺階寬度的合理確定、二階開挖及支護比一階時具有較多的工程優點等結論；通過土壓力分析對朗肯、庫侖兩種經典土壓力理論的區別與聯系、坡面傾斜及墻背有摩擦時的坡面豎向應力分佈、面板背土壓力的分佈形態作了研究，得出了邊坡支擋土壓力受坡體內部穩定與坡面局部穩定兩個方面的影響、土釘支護面板背土體中卸荷拱的存在對面板受力有利等結論。From the demonstration point of view, after analyzing the problems of consumer electronic industry in the slow increasing stage, this paper points out that there are many restricting factors for development of consumer electronic industry. of them, the main factors are the lag of the system reform, the same industry structure everywhere, no formed core technology and short of being supported by advanced correlation industries. on this base, integrating formula research, bringing forward and building complete diamond system is the direction of industry development
本文主要從實證的角度，在對進入慢速增長期的家電行業所遇到的問題進行分析后，認為：我國家電行業的發展受到了多種因素的制約，其中主要的因素有：體制改革的滯后、各地產業同構嚴重、核心技術尚未形成和缺乏先進的相關產業支持，在此基礎之上，結合規范研究，提出形成完整的鉆石體系是行業發展的方向，提高企業的戰略管理素質，力爭走上國際oem模式，是企業積極參與國際競爭，應對未來問題的一個有效途徑。In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object
同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。In the qualitative, quantitative and directional way, successful factors, such as the superiority of marketing, the superiority of resource, the superiority of consumption, and the advantage of corporations supporting, etc, were described, and six important background factors, include of the increasing consumption, the competition from milk market, the challenge of joining into wto, the adjustment of industry structure, the winning against oneself, and accelerating development, were analyzed. new objects were put forward, that is, high quality, rationalizatio n of region distribution, having a core of brand, trade penetrating into various area, diversification of product exploitation, internationalization of preponderant product, and orientating function in market. development of tianjin milk industry should be based on materials and base, take resource integrating and market regulating as means, take trade infiltrating and product development as support, take specialization, industrialization, collectivization and internationalization as orientation, take the development of international milk corporation as mode, and take " creating name brand, entering the first - ten corporation of milk industry " as object
本文在廣泛調查研究的基礎上，圍繞天津奶業發展，全面客觀地評價了天津奶業發展現狀，採用定性、定位、定量和定向的方法，描述了天津奶業作為城郊型奶業在競爭中形成的市場優勢、資源優勢、消費優勢、龍頭企業依託優勢、外資企業進入優勢、奶類項目援助優勢等眾多成功因素，分析了天津奶業未來保持產業領先地位必須認真對待的消費需求增長、乳業市場競爭、迎接入世挑戰、產業結構調整、克服自身劣勢、促進跨越發展的六大背景因素，提出了天津奶業新一輪發展瞄準優質生產無抗化、區域布局合理化、品牌整合核心化、行業滲透多角化、產品開發多樣化、高點對接國際化、市場避強導向化的目標定位和以原料、基地為基礎、以資源整合和市場調整為手段、以行業滲透和產品開發為支撐、以專業化、產業化、集團化、規模化、國際化的發展道路為方向，以國際乳品企業的發展為模式，以「創造一流品牌、跨入乳業十強」為目標的天津奶業發展思路，以及天津奶業二十一世紀前十年和前二十年兩大階段奶牛養殖的五大奮斗目標和區域布局原則，最後有針對性地提出飼養模式選擇、全流程安全生產、產業化龍頭培育、學生飲用奶推廣、政策扶持等促進天津奶業成長的對策措施。分享友人