ABSTRACT Title of Theme: Numerical Simulation and Controlling of Dimples on the Process of Multi-Point Forming for Sheet Metal Specialty: Material Processing Engineering Faculty Adviser: Prof. Cai Zhongyi Multi-point forming is a new means for sheet metal forming.

論文題目：板材多點成形中壓痕的數(shù)值模擬及控制專業(yè)：材料加工工程指導(dǎo)老師：蔡中義教授多點成形（Multi-point forming，簡稱MPF）是一種全新的板材成形方式欧美男免费A片视频。

Software Description: About Action Point Of Sale, This is a complete point-of-sale solution for small restaurants.

Action Point Of Sale 這是一款適用于小型飯店的電子收款機系統(tǒng)解決方案JIZZ中国国产在线。

Because the carbonyl in its structure is with strongly absorb-electron effect, so it is a kind of non-proton polarity solvent with high boiling point, high flash point and low melting point, use conveniently for many processing operation such as filtration, distillation, solvent extraction, and so on; it is with very low toxicity, so the harm to human body is inappreciable, and reduce the environment pollution; due to its very strong dissolvability, it can dissolve organic matter, inorganic matter, resin, polymer, etc., and activate all kinds of reagent, mix to dissolve the other high boiling point solvents; it is with very good stability, it is stable under the hot strong alkali and acidity condition, it is with water-resistance and light, oxygen stability.

246℃ m.p：—20℃閃點121℃ flash point： 121℃分子式：C6H12N2O molecular formula： C6H12N2O 分子量128.18 molecular weight： 128.18 二、DMPU的化學(xué)性質(zhì) Chemical character of DMPU 其結(jié)構(gòu)中由于羰基具有強烈的吸電子效應(yīng)国产精品盗摄盗拍最新视频，因而它是一種非質(zhì)子的極性溶劑人妖系列，具有高沸點、高閃點四虎4hutv最新884a、低熔點美女搞黄在线观看，在過濾www黄色视频在线免费、蒸餾欧美性爱网三级、溶劑萃取等工藝操作中使用方便；毒性極低日本岛国视频精品极品视频观看，對人體危害微不足道色色九九九，也減少了對環(huán)境的污染；由于它具有極強的溶解性911自拍，能溶解有機物国内自拍53页、無機物黄色网站18岁、樹脂、聚合物等操人人操网，并對各種試劑具有活化性質(zhì)人人肏人人干人人肏，還能與其它高沸點溶劑混溶；具有極好的穩(wěn)定性榴莲视频下载ios下载，在熱的強堿和酸性條件下都很穩(wěn)定搜索超碰在线操人妻。，還具有耐水性及對光、氧的穩(wěn)定性日黄a天堂。

This paper proposes an algorithm for point of collapse method to compute the static voltage stability limit point.

文章提出一種計算靜態(tài)電壓穩(wěn)定極限點的崩潰點(Point of Col- lapse)算法网站在线观看视频免黄。

Median Point - the axis passes through the median point of the selection.

Median Point---坐標(biāo)軸通過選擇體的中心點。

The Hot Keys which supported by this USB keypad areMouse Left Key, Mouse Right Key,Num Lock,Window Magnifier, Internet, Email, Media, Power Point, Word, Excel (Word, Excel and Power Point hotkeys only work with pre-Office 2007 suite),Play/Pause, Prev Track, Vol +, Stop, Next Track, and Vol -.

熱鍵是通過這個USB鍵盤支持的鼠標(biāo)左鍵18岁以下禁止观看的黄视频，鼠標(biāo)右鍵人操人操人操人操人操人操人操，數(shù)量鎖，窗放大鏡国产性交视屏，互聯(lián)網(wǎng)国产嫖娼妓院视频网站，電子郵件，媒體思思热在线免费视频，功率點時中文字暮-色哟哟，Word，Excel中（如Word无码字幕AV一区二区三区蜜芽，Excel和Power Point熱鍵只能與前辦公室2007套件）好看的三级片网站，播放/暫停，昨日軌道在线无码不卡大黄，音量+日日精品人人在看人人在看，停止，下一曲三级黄在线播放，和卷-久久99热这里只有精品7。

Aimed at the problem of choosing the initial value when the Newton method is used to compute the controlling unstable equilibrium point, a practical and rigorous solving scheme was presented: by identifying the controlling load bus of the given fault, and using the Thevenin equivalent circuit to represent the rest of the system at the state of the post disturbance stable equilibrium point, using the steady equivalent circuit to represent the induction motor in composite load, and then using the torque characteristics of induction motor, a point near the CUEP is gained to be the initial value. The second order normal forms was used to approximate the stable manifold of CUEP, and the local approximating boundary of the region of attraction of the post disturbance stable equilibrium point was gained. Then just by simulating the state of the system at the fault clearing time, the transient voltage stability of the system could be determined.

針對采用牛頓法求取故障后系統(tǒng)主導(dǎo)不穩(wěn)定平衡點(controlling unstable equilibrium point，CUEP)存在的初值選取難題呦女网址www，提出一種實用但不失嚴(yán)謹(jǐn)?shù)慕鉀Q方案：通過識別給定故障的主導(dǎo)負(fù)荷母線免费一级a一片手机看，對主導(dǎo)負(fù)荷母線以外系統(tǒng)由故障后穩(wěn)定平衡點處的狀態(tài)進行戴維南等值，對負(fù)荷中感應(yīng)電動機部分采用其穩(wěn)態(tài)等值電路国产视频日韩无码，再由感應(yīng)電動機的轉(zhuǎn)矩特性求得CUEP附近的一個點作為近似的CUEPA片毛免费欢看，以此為迭代初值可靠求得CUEP；采用二階正規(guī)型來近似CUEP的穩(wěn)定流形的方法求得近似的局部吸引域邊界黄色视频一区二免费；由仿真得到故障清除時刻系統(tǒng)的狀態(tài)并根據(jù)該狀態(tài)是否位于吸引域內(nèi)判斷系統(tǒng)的暫態(tài)電壓穩(wěn)定性97国产精品视频。

Based on the analysis of the affected extent of the neutral-point potential by every space vector on all kinds of voltage and current conditions the concept named neutral point control grade was proposed for the first time in this paper. The calculation formulas of NPCG were presented as well. Based on NPCG, a novel modulation scheme called optimized 3D space vector modulation (O3DSVM) scheme was proposed in a-b-0 coordinates based on the translation principle of axes, by which the space vectors with higher NPCG values are selected to synthesize the object vector to suppress the unbalance of the neutral-point potential.

該文通過對各種電流電壓狀態(tài)下每個三維空間矢量對直流中點電位的影響進行分析，提出了"中點控制度"(neutral-point control grades粗粗色，NPCG)的概念72av视频，并給出了NPCG的計算公式999人人操人人摸人人看；基于NPCG，在a-b-0坐標(biāo)系下提出一種基于坐標(biāo)平移原理的新型"三維矢量優(yōu)化選擇調(diào)制策略"(optimized 3D space vector modulation中文字幕第10页，O3DSVM)国内自拍高清AV专区，該調(diào)制策略能優(yōu)化選擇NPCG值較高的矢量以合成目標(biāo)矢量，從而達到最大程度控制直流中點電位偏移的目的人人草黄色视频在线。

Point/Snap toggle Allows you to choose between Point Mode (exact point of cursor click determines point selected) or Snap Mode (point is determined by, or "snaps to," nearest endpoint of an existing item to cursor click) while drawing .

點擊/捕捉切換當(dāng)你正在繪圖的時候欧美性爱高潮视频，允許你在 Point Mode 點模式（精確選擇鼠標(biāo)指針?biāo)鶈螕舻狞c位置）和 Snap Mode 捕捉模式（點位置的選擇被確定在距離指針單擊位置最近的一個現(xiàn)有內(nèi)容上的一個距離指針單擊位置最近的端點）之間自由切換

If the Point/Snap button in the Status Bar is set to Snap, the left mouse button will snap to the closest point (either an end point or a line intersection) when clicked in the Design Document Window.

如果在狀態(tài)欄上的 Point/Snap 點擊/捕捉按鈕被設(shè)置為捕捉模式，當(dāng)在文檔設(shè)計窗口中單擊時XXXXWWW视频欧美，鼠標(biāo)左鍵將捕捉最近點国产精品视频网站免。