The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

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Auto recognition of the graphic outline is a necessary basic function for the new CAD design system.

圖形輪廓線的自動別是新一代CAD設(shè)計系統(tǒng)必不可少的基本功能日韩人妻巨乳自慰，通過對圖形輪廓線自動識別技術(shù)的探討18禁午夜老色批福利院，得出一種識別算法的圖形輪廓自動識別的主要步驟。

John Maeda is a graphic designer and computer scientist dedicated to linking design and technology.

約翰前田是一個平面設(shè)計師和計算機科學(xué)家致力於連接設(shè)計與工藝人妻三级片。

Taking the design of plane mechanism as an example, the paper briefly explains how to apply the snap function of AutoCAD to graphology, analyzes the design error of graphic method,and discusses about the error control of the method.

以平面機構(gòu)設(shè)計為例日本公妇在线视频，簡要說明如何將AutoCAD的各種捕捉功能用于圖解法中，并對其設(shè)計誤差進行了分析亚洲欧美丝袜精品久久中文，對誤差控制進行了探討日韩三级亚洲三级。

The engineering graphics education in U.S. universities combines the graphic content with design intellection, applies all kinds of ways to express the design, and requires expressive skill and self-learning ability for students. Some characteristics of engineering graphics education in U.S.

美國各大學(xué)的工程圖學(xué)教育注重圖學(xué)內(nèi)容與設(shè)計思維的結(jié)合，強調(diào)多種視覺表達方式的綜合應(yīng)用亚洲a级黄片免费观看，強調(diào)學(xué)生表達技能的訓(xùn)練精品国产经典三级在线看，強調(diào)實踐性教學(xué)和學(xué)生的自主學(xué)習(xí)。

The design adopts inputting the principled graphic, so the design and the debugging are much intuitional and simple.

設(shè)計采取輸入原則性圖表91精品固产在线自产拍，因此設(shè)計和調(diào)試intuitional 和簡單午夜福利综合网站。

The system uses CATIA V5 standard interface and is good of man-computer interaction. Its functions include such basal design graphic tools: driver's comfortable H point, 2D human model establishment, eye ellipsoid, head envelop surface, driver's hand reach etc, and also internal layout based the method of Expert System.Expert System in this paper differs from ordinary design software.

該系統(tǒng)采用CATIA V5標準界面，具有很強的人機對話能力日韩伊人自拍视频网站在线，操作使用方便国产浓毛熟女免费视频，其主要內(nèi)容包括：適宜駕駛員H點、二維人體樣板、眼橢球A片三集片在线hu免费、頭廓包絡(luò)面很爽的超薄肉色丝袜脚交、駕駛員手伸及界面等車身內(nèi)部布置的基礎(chǔ)設(shè)計圖形工具，以及基于專家系統(tǒng)方法的車身內(nèi)部基礎(chǔ)布置設(shè)計等毛片视频免费看。

The book on paper folding is characterized in its simple design of the cover, disordered typeset of graphic demonstrations and invivid demonstration of design sketches.

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This paper has made a simple introduction to the process,system demand investigation analyses and design of the development of Chengdu Chongqing expresswaydata base,and the technical characters in developing it,such as the application of dynamic sectioning technology,the opening system design technology,graphic system processing technology and the application of GIS technology.

簡要介紹了成渝高速公路數(shù)據(jù)庫的開發(fā)過程、系統(tǒng)需求調(diào)查分析與設(shè)計及數(shù)據(jù)庫開發(fā)中的技術(shù)特點欧美第十页，如動態(tài)分段技術(shù)的應(yīng)用8x在线视频、開放式系統(tǒng)設(shè)計技術(shù)、圖形系統(tǒng)處理技術(shù)及GIS技術(shù)的選用无码少妇精品一区二区免费动态。

The procedures of design and analysis of this mechanism is very complicated if individual graphic means or math analysis is used, So MAPLE was used in kinematical design and kinetic analysis of six-bar mechanism.

在進行該機構(gòu)的設(shè)計和運動分析時91精品一区综合在线观看，單獨使用圖解法或解析法其過程都十分繁瑣，因此采用MAPLE對六連桿打緯機構(gòu)進行動態(tài)設(shè)計和運動分析女人18毛片在线播放。