In this dissertation, with the application to ancient buildings of the Leshan Grand Buddha tourist area and PingDu Sportpark, geometric optimized simplification and texture techniques are proposed and researched in detail, along with the analysis of the general characteristic of ancient and modern architectures. Optimized techniques such as Level of Detail, structure optimization, mapping optimization and texture-baked mapping optimization are researched specially.

本文在分析古代建筑與現(xiàn)代建筑特點的基礎(chǔ)上大学情侣酒店，分別以樂山大佛景區(qū)古建筑群以及平度奧林匹克體育公園現(xiàn)代建筑仿真為例女同性毛片网站，深入研究分別適合古代建筑與現(xiàn)代建筑的幾何優(yōu)化與紋理優(yōu)化技術(shù)国产午夜福利影音资源网，重點研究并建立了多層次細節(jié)優(yōu)化国产精品永久免费高清、結(jié)構(gòu)優(yōu)化一区二区高清无码网站、貼圖優(yōu)化农村黄色网站、實例優(yōu)化與烘焙優(yōu)化建模技術(shù)。

The function,composing and designing methods of each module about the hardware circuit of the signal processing board are introduced in detail,and the software flow about signal processing board is described in detail.

詳細介紹了該信號處理板硬件電路設(shè)計中各個模塊的功能噜噜噜色、組成和設(shè)計方法91精品久久久久久久久久，并對信號處理板軟件流程做了詳細說明。

It describes mainly the process of systemdesign, including whole design, detail design, database design , security design, data structure and data code scheme, It introduces in detail how to create a graphic file of pipeline data on the MicroStation platform, and the exchange of data between the MicroStation and other GIS application software, At the same time, it introduces how to realize popular manage mode of GIS data on the MicroStation GeoGraphics, namely integratinggraphics and attribute.

本文在分析長沙市地下管線數(shù)據(jù)現(xiàn)狀和目前數(shù)據(jù)管理情況的基礎(chǔ)上91黄在线观看国产，指出建立長沙市城市地下管網(wǎng)信息系統(tǒng)的必要性和緊迫性麻豆91在线亚洲欧美中文字幕，闡述了系統(tǒng)的設(shè)計過程，包括總體設(shè)計一级毛片a人爱免费视频性色、詳細設(shè)計日韩丝袜清纯自拍视频网站在线、數(shù)據(jù)庫設(shè)計和安全設(shè)計，講述了系統(tǒng)的數(shù)據(jù)組織方式及數(shù)據(jù)編碼方案视色电影，并詳細介紹在MicroStation平臺下如何處理數(shù)據(jù)生成管網(wǎng)圖形文件超碰在线人人操人人，闡述了系統(tǒng)實現(xiàn)的方法、過程以及與其它系統(tǒng)如何實現(xiàn)數(shù)據(jù)交換√α大片，也介紹在MicroStation GeoGraphics下如何實現(xiàn)當今GIS較為流行的數(shù)據(jù)管理模式：圖屬一體化理论片在线看免费观看影院。

Recent developments of clean oxidation systems catalyzed by polyoxometalates are summarized in detail. The emphasis is on the epoxidation reaction of olefinic compounds, oxidation of alkanes and aromatic compounds with the comparatively ideal oxidants, hydrogen peroxide and molecular oxygen respectively. The oxidation mechanisms are elucidated in detail.

文本總結(jié)了多金屬氧酸鹽在液相清潔催化氧化方面的進展，主要針對以過氧化氫和分子氧為氧化劑的烯烴類化合物的環(huán)氧化反應(yīng)本道无码黄色视频在线播放、烷烴和芳香族化合物的氧化反應(yīng)欧美精品一羞羞，并詳細探討了此類氧化反應(yīng)的反應(yīng)機理中日美一级A片中国特黄大片。

This article puts in detail the meaning of the whole process of cost and impact on the cost of five main phases - the investment decision-making stage, the design stage, the stage of the contracts, the construction phase, the phase of the completion of the current situation in the country and specific method of cost control in detail on Put forward in China's bridge construction cost control should be the focus of the investment decision-making phase of the design phase and transfer.

摘要本文拋磚引玉，詳細論述了全過程造價的含義福利视频自拍，并對影響造價的五大主要階段-投資決策階段黄色网站视频观看久操网、設(shè)計階段、承發(fā)包階段黄色视频你懂得在线观看、施工階段中文字幕欧美综合第一页、竣工階段在國內(nèi)的現(xiàn)狀和具體造價控制方法進行了詳細闡述，提出在我國橋梁工程造價控制的重點應(yīng)該向投資決策階段和設(shè)計階段轉(zhuǎn)移456久久影院一区二区。

The communication systems wildly used nationally and internationally, such as audio frequency wire communication, carrier-current communication, micro-wave communication, optic-fiber communication, expanding frequency communication and satellite relay communication, are investigated in detail. The different communication systems used in Changsha County electric power systems are analysed in detail.

對目前國內(nèi)外使用較多的一些通信方式如音頻線通信少妇被又大又粗又猛烈的来回进出、載波通信、微波通信在线观看黄毛片、光纖通信三级片观看网址、擴頻通信、衛(wèi)星幀中繼通信等進行了較為深入的分析和研究影音资源在线观看；對目前長沙電力局正在使用的變電站與調(diào)度端的通信方式——進行性價比方面的分析比較清风阁免费视频网站A片，綜合以上，得出了最為合適的變電站到調(diào)度端的通信方式女女同免费播放毛片视频。

The mold structure and working principle were introduced in detail, mainly stated in detail design of angle pin and pin gate .

通過對照相機前蓋的使用要求以及工藝性分析日韩在线观看免费视频在线观看，介紹了基于Pro/E注射模設(shè)計基本流程，并詳細介紹了該注射模的結(jié)構(gòu)和過程欧美二级，重點闡述了斜銷及點澆口設(shè)計要點欧美人永久手机在线A片。

The thesis mainly researches on the single phase AC/AC converter in the topologies including AC_Buck and AC_Cuk. Firstly, the operating principles of the two converters are analyzed in detail and the rules of their parameters design are educed; The commutation of their power switches which is the key of these topologies to realize is analyzed in detail and a feasible solution which can be named RCD-Commutation mode is presented and proved effectual by theory analyses and simulation results.

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The system discussed before is analysed and modeled by means of using Unified Modeling Language. On the basis, the distributed Web Service frame of the system and distributed database structure is studied in detail. Meanwhile, the function of system, such as user management and human basic information management and so on, is implemented in detail.

在運用統(tǒng)一建模語言對系統(tǒng)進行分析和建模的基礎(chǔ)上，對系統(tǒng)的分布式Web Service架構(gòu)和分布式數(shù)據(jù)庫結(jié)構(gòu)作了詳細研究和設(shè)計欧美性爱资源网，并具體實現(xiàn)了用戶管理和基本信息管理等系統(tǒng)功能www.射。

The article presents the developing condition of PWM and SVPWM first.Then the theory of SVPWM is discussed in detail.The SVPWM is based on the thought of magnetic chain tracking.It makes the ideal magnetic chain circle of three-phased sysmmetry electric motor supplied by three-phased sysmmetry sine wave voltage for basis,uses the practical magnetic chain vector formed by the different switch modes of three-phased inverter to track the basic magnetic chain circle.During the course of tracking,the inverter changes the switch modes properly to form the PWM waves.Then the modulation wave of SVPWM is analyzed in detail.The modulation wave of SVPWM is implicit,but the analogous modulation wave in A-B-C axis needs to be calculated in order to expose the internal relation of SVPWM and SPWM.That is to show the implicit modulation wave of SVPWM. SVPWM actually is a transformed SPWM ruly sampled by the modulation wave which is injected by the zero prefaces based on space vectors.

本文首先對脈寬調(diào)制技術(shù)的發(fā)展現(xiàn)狀進行了綜述，在此基礎(chǔ)上分析了電壓空間矢量脈寬調(diào)制技術(shù)的發(fā)展現(xiàn)狀欧美最猛性XXXXX69；接著對空間電壓矢量脈寬調(diào)制技術(shù)的基本原理進行了詳細的分析和推導(dǎo)国产黃色在线观看，SVPWM是基于磁鏈追蹤的思想，它以三相對稱正弦波電壓供電下三相對稱電動機定子理想磁鏈圓為基準，由三相逆變器不同開關(guān)模式下所形成的實際磁鏈矢量來追蹤基準磁鏈圓的激情黄页免费网站，在追蹤的過程中欧美与黑人视频，逆變器的開關(guān)模式作適當?shù)那袚Q，從而形成PWM波草草影院在线观看；然后詳細分析了電壓空間矢量脈寬調(diào)制技術(shù)的調(diào)制波国产精品无码AV欣赏网，雖然SVPWM法的調(diào)制波是隱含的，但是為了揭示SVPWM法與SPWM法的內(nèi)在聯(lián)系91在线视频国产福利试看，需要求出SVPWM在A-B-C坐標系上的等效調(diào)制波毛片手机在线，也就是將SVPWM的隱含調(diào)制波顯化；SVPWM實質(zhì)是一種基于空間矢量在三相正弦波中注入了零序分量的調(diào)制波進行規(guī)則采樣的一種變形SPWM无码国产原创日韩制服AV。