projection drawing 中文意思是什麼
projection drawing
解釋
投影圖- projection : n 1 射出，投擲，發射，噴射。2 投射；投影，投影法；（地圖）投影圖製法；【電影】放映。3 凸出；凸出...
- drawing : n 1 延引，牽引；引誘。2 抽簽；拈鬮。3 【機械工程】拔絲；沖壓成形。4 描畫，制圖；圖，圖形；素描；...
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First calculation method : doing horizontal projection drawing on drawing piece, k value is introduced by area equation of projection drawing, k value is obtained by area equation, along outline of projection drawing to add k value, that is, outline shape of blank drawing, principle area - equal and shape similar are used. second calculation method : along outline of drawing piece horizontal projection drawing, to do normal line of penetration line for wantonly point of this point, to obtain high of drawing piece on this point normal line, point and point is to form outline shape of blank
計算方法之一為k值法：作拉深件水平投影圖，在該投影圖面積方程中引入k值，利用面積相等原理解方程，求得k值，沿水平投影外沿加上k值，即為毛坯圖的外廓形狀。計算方法之二為拉深線法：沿拉深件水平投影圖外廓，在任意點作該點切線的法線，在該法線上以該點拉深件的高度為量，在法線上取截點。 -
Second, accorded with the actual projection dem, a fast drawing method of the complicated scene is proposed
2 .結合實際項目中需求提出了復雜場景的快速繪制方法。 -
Employing the oblique projection shifting method, we have solved some graphic problem in descriptive geometry. it is very simple and fruitful to deal with difficult problems in orthographic drawing
摘要介紹了投影變換中的斜投射法及其在解決工程圖學一些問題中的應用。用這種方法可解決工程圖學中用正投影方法不便解決的圖示、圖解問題，而且具有應用范圍廣、作圖簡便的優點。 -
The application of semantics is discussed as follows : the projection relation semantics leading to recognizing cylinder, the region semantics leading to recognizing linear sweeping, the free element semantics leading to recognizing the feature which the cylinder is cut by plane. last, a prototype system is developed according to the semantics model. the system can read dxf that contains 2d engineering drawing information and recognize the 3d feature
接著，根據工程語義模型表述，詳細分析了各個類別、層次以及類別之間表達的工程語義的特點與內容，然後進行零件的特徵分類，從特徵識別的角度探討了工程語義在圖樣理解的應用，並詳細討論了圓柱體、線性拉伸體、圓柱體的平面截切特徵從投影語義、連通域語義、游離圖元語義引導識別的應用過程。 -
Drawing the intersection line of two quadric by the method of ellipse arc projection and topological transformation
橢圓投射和拓撲變換解兩曲面相貫線 -
Engineering drawing has always been labeled as a practical subject. a combination of geometrical, building. mechanical and electrical drawing, it relates between theory and the picture of reality. engineering drawing will provide an accurate and complete ptcture for every object tn terms of shapes and sizes. usually, it is taught using the face - to - face teaching mode even in an odl environment. due to its nature, some students may find difficulty in imagining and interpreting the drawings. however, the availability of sophisticated technology provides the opportunity for the learning of engineering drawing to be enhanced via online. a web - based system for teaching and learning engineering drawing was developed based on a constructivism model. the web - based system is tailored for several topics of engineering drawing such as orthographic projection, sectional view, isometric and oblique drawing at the secondary level. the learning strategy consists of multiple phases beginning with introduction, concept learning, engineering drawing method, application and exercises. during introduction, students will be exposed to an overview of the topic followed by learning of specific concepts. the system provides a learning environment that allows engineering students to view objects from different angles, such as third angle projection and first angle projection as well as views of plans, side and front elevations. after learning about the concepts, students wilt be guided through the various steps in drawing methods for each topic via animations and simulations. learners are able to view any section repeatedly. examples of real application of engineering drawings were also given using graphic, animations and video. to evaluate students understanding, exercises were given at the end of each session
工程制圖一直被認為是一門實踐性學科，其整合了幾何學、建築、力學、電子制圖等，從而將理論與現實圖像聯系起來，工程制圖能為每個不同形狀、尺寸的物體提供精確的、完整的圖像.通常，即使在開放與遠程教育環境中，工程制圖的教學也是通過面對面的教學模式來進行的.由於其特殊性，一些學習者可能難以想象並解釋這些圖像.然而，尖端的技術使得可以通過在線的方式加強工程制圖的學習.研究者基於建構主義模式開發了一個面向工程制圖教學和學習的網路系統.該系統適用於幾種工程制圖，例如展開圖、刻面圖、等角圖和斜角圖.學習過程包括導論、概念學習、工程制圖方法，以及應用與練習等階段.在導論階段，系統為學習者提供了專題簡介，然後是概念學習階段.系統所提供的學習環境允許工程專業的學生從三維透視、一維透視、平面圖、側立面、正立面等不同角度來觀察物體.經過概念學習階段后，系統將引導學生通過動畫和模擬學習每個專題中制圖方法的不同步驟，學習者也能重復觀察任何剖面.另外，還通過圖像、動畫和視頻等方式展示真實的工程制圖應用案例.最後，為了評價學生的理解能力，在每部分內容後面都附有相關的練習 -
The natural line drawing is the one with hidden - parts - eliminated. based on the correlative constraints between vertices and straight lines on a planar object, we have proposed a new recursive method for computer interpretation of line drawings under orthographically axonometric projection
在建立了相關約束關系式的基礎上，提出一種基於點與直線的相對位置關系遞歸解釋線框圖的新方法，主要針對的是正軸測投影線框圖的計算機解釋。 -
A new way to draw isometric projection drawing is suggested. this method has special and novel character, and has the special significance for to draw advertisement drawing and to draw isometric projection drawing
提出一種全新的正等軸測投影畫法，該法獨特新穎，畫圖簡單，對廣告宣傳繪畫、計算機畫正等軸測投影圖有較大的實用意義。 -
Abstract : the paper narrates the essential basic learning of thinking of viewing drawings and the techniques of projection of point, line and plane, introduces the basic ways of thinking and the steps of viewing drawing, and makes a summing up and an analysis on the basic law of thinking of viewing drawings
文摘:敘述了看圖思維必備的基礎知識和記憶點線面投影特性的技巧，介紹了看圖思維的基本方法及看圖步驟，對看圖思維的基本規律進行了歸納和分析 -
On views separation and coordinate standardization, a coordinate axis projection - based approach and an image scanning - based approach are proposed for views separation, the former reduces the compare times of 2d primitive in drawings and raises the efficiency simultaneously, the latter can separate free nember views of engineering drawing accurately and it has no correlation with complexity of primitive, then, two sets of 2. 5d coordinate systems are introduced as intermediates to relate the 2d original drawing system to the 3d space projection coordinates anfd a formal technique is developed for constructing transformation matrices between coordinates
3 .在工程圖視圖分離和坐標規格化方面，提出了改進的坐標軸投影分離演算法和基於圖像掃描的視圖分離演算法。前者減少了工程圖中二維實體的比較次數，提高了運行效率;後者可以準確分離具有任意視圖數目的工程圖，且演算法的穩定性與邊界復雜度無關。通過引入二維半中間坐標系推導出了從繪圖坐標繫到空間投影坐標系轉換的轉換運算元並給出了基於轉換運算元的坐標規格化演算法。 -
On the basis of demand analysis, this thesis finishes the design of the system and realizes some key functions, including industrial section modeling, the drawing and the mutual modifying of the drill histogram, the formation and the perfection of the projection section, the construction of stratum modeling, and the realization of the mechanism of data communication administration
在需求分析的基礎上完成了系統的設計，系統成功地實現了工區模型組件、鉆孔柱狀圖模型組件、剖面模型組件、層模型組件的構造與各類組件間的數據通信管理機制的軟體實現。 -
According to projection features and projection characteristics of the boss - eyed plane, we can adopt " the way of analyzing the line frames from the projection of an object surface " to analyze the combination shape and hence construct the three - dimensional drawing
根據可視面的投影性質和投影特徵，可採用「表面框分析法」對組合體形狀進行分析，從而確定三維立體圖。 -
The restaurant is spacious and bright can hold 150 people to have dinner, report drawing room can hold 100 people, have advanced stereo, projection apparatus negotiate, train, set up a class for commercial affair of you, various meeting provide service
賓館還設有各種規格的會議室和棋牌室。餐廳寬敞明亮可容納150人就餐，報告廳可容納100人，有先進的音響投影設備為您的商務洽談培訓辦班各種會議提供服務。 -
According to the model, in respect of the content of engineering drawing the semantics is divided into the projection relation semantics, the expression mode semantics and the dimension constraint semantics. in respect of the deepness of information, the semantics is classified into the lower semantics, the middle semantics and the upper semantics
該模型從類別化的角度分為投影關系語義、尺寸約束語義和表達方式語義，從層次化的角度分為底層語義、中間層次語義和高層語義，從網路化的角度得到各個類別、各個層次之間的語義。 -
177 this is a plot plan ( general layout, general arrangement, detail, section, erection, flow sheet, pid, assembly, civil, electrical, control and instrumentation, projection, piping, isometric ) drawing
這是一張平面布置（總平面、總布置、細部、剖面、安裝、流程、帶儀表控制點的管道、裝配、土建、電氣、自控和儀表、投影、配管、空視）圖。 -
In engineering graphics, the traditional skill of analyzing projection drawing of the combination shape is neither suitable for application nor for computer programming
摘要在工程圖學中，傳統的對組合體的讀圖方法不便於應用，更不適合於計算機編程。
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