相似多面型 的英文怎麼說
中文拼音 [xiāngsìduōmiànxíng]
相似多面型
英文
double brillant cut-
Hypergolic ignition systems bear many resemblances to hybrid rockets.
自然式點火系統在很多方面與混合型火箭相似。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These researches will help us to discover changing or developing principle of things, support to decision - making, etc. the thesis addresses several key technical problems of pattern mining and its search based similarity in time series, which covers feature patterns and relationship patterns mining, pattern search based similarity in time series and stream time series and issues concerning application system implementation oriented to analysis. major contributions of this thesis include : 1. research of mining feature patterns in time series a novel method is proposed to discovery frequent pattern from time series
本文在分析時間序列特點和實際應用需求的基礎上，針對時間序列的挖掘與相似性查找一些關鍵技術進行了研究，具體包括特徵模式挖掘、多序列關聯模式挖掘、相似性模式查找等方面，所做的工作和取得的創新成果體現在以下三個方面： 1 ）時間序列特徵模式挖掘研究首次提出了一種基於互關聯后繼樹模型的時序特徵模式挖掘方法。These researches will help us to discover changing or developing principle of things, support to decision - making, etc. the thesis addresses several key technical problems of pattern mining and its search based similarity in time series, which covers feature patterns and relationship patterns mining, pattern search based on similarity in time series and stream time series and issues concerning application system implementation oriented to analysis. major contributions of this thesis include : 1. research of mining feature patterns in time series a novel method is proposed to discovery frequent pattern from time series
本文在分析時間序列特點和實際應用需求的基礎上，針對時間序列的挖掘與相似性查找一些關鍵技術進行了研究，具體包括特徵模式挖掘、多序列關聯模式挖掘、相似性模式查找，在線相似性查找以及最終的分析應用系統開發等方面，所做的工作和取得的創新成果體現在以下五個方面： 1 ）時間序列特徵模式挖掘研究首次提出了一種基於互關聯后繼樹模型的時序特徵模式挖掘方法。Based on the reseaching of lycoris leaf micro - morphology characters by sem scanning, light microscope viewing and using paraffin method in the article, we try to provide the proofs of experiment and the efffective characer indexes to discuss the system and evolution of the lycoris. we find these microscope characers through reseach are as follows : the arrangement type, density and the length of stoma ; the shape and length of the epidermal cells ; the ridge of epidermis ; the transverse shape of leaf ; the number of the vascular bundle ; the style of vessel arrangement of vascular bundle in the middle vein ; the layers of palisade tissue ; the ratio of the thicken of palisade tissue to that of spongy tissue ; the angle number of the middle leaf ; the type of ventilating cavity etc. these characters are different from those of species in lycoris, meanwhile these characters are similar to those of some species in lycoris. so these characters can be used as the character indexes for differentiating species and reseaching systematic evolution of lycoris ; we can divide lycoris into two subgenus by these characteristic indexes : the species of one subgenus are l. aurea ( l " her. ) herb, chinensis traub, l. caldweuii traub, l. anhuiensis y. hsu et q. j. fan, l. longituba y. hsu et q. j. fan ; the species of another subgenu s are l. houdyshelii traub, l. albiflora koidz.,
研究結果表明：葉表皮的氣孔排列方式、長度、長寬比，脊的明顯與否，葉表皮上的顆粒紋飾的多少、大小，葉表皮細胞長度、長寬比、垂周壁形狀，上部葉柵欄組織細胞層數、葉的維管束數、葉中脈導管組成數目，氣腔類型，葉的脊部遠軸面的角數，葉緣的形狀等這些特徵在種間存在差異，同時，在有些種之間又有相似性；因此，這些特徵既可以作為區分種的證據，又是研究石蒜屬植物系統演化的性狀指標，根據這些性狀指標，可以將石蒜屬植物大致分為兩個亞屬：一是忽地笑、中國石蒜、短蕊石蒜、安徽石蒜、長筒石蒜，二是江蘇石蒜、乳白石蒜、石蒜、玫瑰石蒜、稻草石蒜；在兩個亞屬中其中有些種如忽地笑、長筒石蒜、中國石蒜的親緣關系則更近些。Combining with knowledge representation and automatic reasoning principle of ai and generic paradigm, the system has these main functions : ? it is able to show different solutions of typical example ; ( 2 ) it can automatically generate problems similar to the example for students to solve by providing them with clues ; ( 3 ) these problems can be studied by demonstrating the complete solution process and answers with the help of automated reasoning, or by providing real - time prompts to students concurrent with the students " solution processes with the help of automated reasoning ; ? it provides exercises and is able to call a program produced by the group ( the translator ), which transfers apla programs to executable programs so as to verify its correctness ; ( 5 ) it let teacher to add examples in the database ; etc. hi the course of systematic research, we deeply investigated the relevant knowledge of the system and made some innovation : about teaching content, we select par method as the main content
本系統選用薛錦雲教授的par方法為主要教學內容，應用人工智慧的知識表示和自動推理原理及泛型思想，使得系統具有以下核心功能：展示幾種典型例題的解；以泛型思想為指導，實現了無限題庫，可以自動生成與典型例題類似的問題給學生求解並給予提示；對于這些題目，計算機可以自動推理出由問題到程序的全過程供學生學習；也可通過自動推理根據用戶的實際做題情況實時給出提示，互動式地幫助學生學習演算法程序設計；學生可以從問題庫中獲得練習，並調用轉換器，將自己的apla程序轉化為可執行語言程序，運行以檢驗其正確性；對教師而言，可以對已有的實例庫、問題庫進行添加操作等。在系統的研製過程中，我們深入研究了系統的各方面相關知識，並進行了多方面的創新：在教學內容方面，首次選用par方法為主要內容。The reasoning of structured model : how to transfer structured model into mathematical model that can be solved by an arithmetic system ; the determination of the most appropriate target case includes two steps : the first is wide retrieval, and the second is extract retrieval that is a method driven by adaptation rules. the case base maintenance : case storage and case knowledge maintenance. the last part of this paper is about the real information system, which introduces the analysis and design of the information system and uses a real case to describe how the system operates
這些研究工作包括：事例和問題的知識表示：給出屬性集、結構集和目標集的事例表示方法；知識化模型的推理：結構化的模型如何轉化為求解系統可識別的屬性模型的過程；最相似事例的確定：兩步選擇過程，粗選過程按屬性相交度，精選按類比轉換的規則驅動的確定最相似事例的原則和方法；類比轉換的方法：確定在一定條件下的轉換方法；事例庫的維護：事例庫是可維護的，一方面隨著系統解決問題的增多，事例庫也會不斷擴大知識領域；另一方面，通過事例庫維護模塊，可以從用戶那裡得到新的建模知識。To realize multi - strategy translation mechanism, process lexicon database, process model database, translation memory database and process sentence snippet database are established. to solve the disadvantage of searching example process sentences slowly, a novel method which associates key word with sentence model is put forward to establish coarse choosing model marshal. a mathematics model to compute similarity of two sentences is brought forward too
2 、針對工藝語言多策略翻譯機制，設計了相應的四個翻譯基礎庫? ?工藝詞典庫、工藝語句模板庫、翻譯記憶庫和工藝語句片段庫;針對工藝實例語句匹配搜索慢的缺點，提出了一種基於關鍵詞和句型相結合的粗選實例模式集;提出了一個計算語句相似度的計算模型，該模型從總體和微觀兩個方面與從詞匯、詞性、詞性子類和語言片段四個層次來綜合考慮語句相似度問題。Also, given the portability of such plans and the fact that a typical employee works with a number of different employers during a career, defined contribution plans may represent a “ win - win ” situation for employers - employees seem to like being in charge of their retirement funds and employers are relieved of the potential burden associated with poor investment returns on plan assets
另外，鑒于該計劃的可移植性和這樣一個事實（一個典型僱主在職業生涯中會與眾多不同雇員共事） ，因此界定供款計劃對僱主-雇員可能是一個"雙贏"的局面，他們似乎就像是掌管自己退休基金並且僱主不用再承擔與計劃資產投資回報欠佳相關的潛在負擔To fulfill the need of the application of rp technique in medical domain, reverse cad modeling from medical cross sections is systematically studied in this dissertation. firstly, some algorithms related to the research of this dissertation are studied. new algorithms for orientation and inclusion test for simple polygon, an error constrained automatic faring algorithm for b - spline curve and a theorem regarding the termination criterion for subdivision of triangular bezier patch are proposed
本文針對rp技術在醫學領域應用的需要，系統研究了基於醫學斷層輪廓數據的反求cad建模理論和方法： （ 1 ）在基礎演算法研究部分，提出了簡單多邊形方向及點在多邊形內外判斷的新方法、三角b zier曲面片離散的誤差控制定理和一種帶誤差約束的b樣條曲線的自動光順方法； （ 2 ）提出了一種基於相鄰層輪廓相似性的醫學斷層輪廓數據曲面重構方法； （ 3 ）提出了一種稱為「虛擬測量」的曲面模型處理方法。The same could be said of nine dragons : it is an energetic company that suffers from none of the jittery distractions ? the unrelated subsidiaries and the quasi - state, quasi - private ownership ? that plague many large chinese firms
玖龍紙業具有相似的狀況：這家充滿活力的公司毫不囿於許多大型的中國企業面臨的困擾? ?與己無關的眾多子公司和半國有半私人的所有制。Two - order enhanced un - split finite volume euler method for multi - fluid flow, which combines the roe approximate riemann solver, is developed to simulate the multi - fluid interactions, such as the fluid described by polynomial eos, stiffen gas eos, jones - wilkins - lee ( jwl ) gaseous explosive eos, cochran - chan ( cc ) solid explosive eos and hom shock wave eos, etc. numerical results of the id, 2d and 3d multi - fluid interaction examples show that the high - resolution method and interface capturing equations can resolve the multi - fluid flow correctly and successfully. a simple fluid - mixture type ppm algorithm for multi - fluid flow, which is based on vof interface capturing method and resolved by langange / remap two steps, is developed to simulate the high density or high pressure ratio flow at both sides of the interface
本文提出了實用於多介質流體的增強型二階精度有限體積歐拉數值計算方法，採用roe方法近似求解riemann問題，可以適用於多項式狀態方程、 「 stiffengas 」狀態方程、 jones - wilkins - lee爆轟產物狀態方程、 cochran - chan固體炸藥狀態方程以及hom狀態方程等，並對多介質流體相互作用的一維、二維、三維問題進行數值計算，數值驗證了本文給出的高精度差分格式和界面捕捉方法的正確性，兩種方法耦合形成的多介質流體數值計算方法是成功的。After acquainting myself with the research status with regard to beam on two parameter foundation about the computational method, mechanic performance, damage assessment, similitude theory, several aspects will be studied in this paper : ( 1 ) whereas most of the existed researches are based upon winkler ( one - parameter ) foundation model, this paper discusses the computational methods of beam on two - parameter foundation, and compare the different methods with each other
在較為充分地了解了國內外對雙參數地基上樑的計算方法、力學性能、破損評估、相似性理論應用的研究現狀后，本文主要對以下幾個方面進行研究： （ 1 ）鑒于已有研究多基於文克爾（單參數）地基模型，本文對雙參數地基上樑的計算方法（靜力和動力）進行了較為深入的研究，並對各種計算方法進行了比較。Double cut brillant
相似琢型多面型Due to aging and utilizing condition changing, rc structures are often needed to be strengthened. rc structures wrapped with steel wire meshwork and reinforced by high strength mortar spray is proved to be a new effective reinforced method not only by the similarity of material behavior to objects strengthened, but also its endurance and easy installing
實際工程中的結構物由於使用壽命或使用條件變化等原因，往往需對其進行加固，加固方法是多種多樣的，其中鋼絲網外噴高強砂漿加固混凝土結構不論從所使用材料性能與原結構的相似性，還是從加固的耐久性和方法的方便性等方面來講，均是一種有效的新型加固方法。The multi - resolution system can be used in similarity comparisons to reduce the calculation load and to get the full comparison result in the overall shape. then the features recognized with this system can be used in more detailed comparisons
在應用方面，該多解析度模型能用於模型的相似度比較，從而減小計算負載，達到由粗全局到細局部的分層比較。As to physical scenery, danxia and karst have many similarities in type, shape, and compound, however, karst scenery is superior in the miraculous hills and caves to danxia scenery, while the latter is superior in the red walls and cliffs to the former
自然景觀方面，丹霞景觀與巖溶景觀在類型、外形、組合上有較多相似之處；兩相比較，巖溶風景勝在山奇洞奧，而丹霞風景則勝在赤壁丹崖。分享友人