【導(dǎo)讀】EISPACK庫程序的“通俗易用”的接口，此即用FORTRAN編寫的萌芽狀態(tài)的MATLAB。于1984年成立了MathWorks公司，并把MATLAB正式推向市場。KEDDC）紛紛淘汰，而改以MATLAB為平臺加以重建。時(shí)候，MATLAB已經(jīng)成為國際控制界公認(rèn)的標(biāo)準(zhǔn)計(jì)算軟件。方面獨(dú)占鰲頭，而Mathematica和Maple則分居符號計(jì)算軟件的前兩名。理的分析與研究、大量的計(jì)算、電能變換的波形測量、繪制與分析等，都離不開MATLAB。與相比，現(xiàn)今的MATLAB擁有更豐富的數(shù)據(jù)類型和結(jié)構(gòu)、更友善。部分使用權(quán)，打通了與MATLAB的接口，從而把其數(shù)學(xué)計(jì)算能力提高到專業(yè)層次。就影響而言，至今仍然沒有一個(gè)別的計(jì)算軟件可與MATLAB匹敵。動態(tài)系統(tǒng)仿真等課程的教科書都把MATLAB作為內(nèi)容。在那里，MATLAB是攻讀學(xué)位的大學(xué)生、碩士生、博士生必須掌。設(shè)計(jì)研究單位和工業(yè)部門，MATLAB被認(rèn)作進(jìn)行高效研究、開發(fā)的首選軟件工具。從版起，MATLAB對其語言進(jìn)行了根本性的變革，使之成為一種高級的“陣。MATLAB進(jìn)行數(shù)值計(jì)算的基本處理單位是復(fù)。MATLAB中含有一個(gè)仿真集成環(huán)境Simulink,其主要功能是實(shí)現(xiàn)各種動態(tài)系統(tǒng)建模、

　　

【正文】 寫同學(xué)錄的時(shí)候 ，突然就發(fā)現(xiàn)是不是真正的成長了，好像并沒有那么重要了；然后到了高中，覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個(gè)句點(diǎn)，但畢業(yè)晚會的時(shí)候最終還是被吉林建筑工程學(xué)院城建學(xué)院電氣信息工程系自動化專業(yè)課程設(shè)計(jì) 第 23頁 共 20頁 梗塞在了咽喉，后來再次站在他曾經(jīng)揮汗如雨的球場，看著他投過籃球的球框時(shí)，突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。 Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來， 這個(gè)世界上，對某個(gè)事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅(jiān)決，還有，時(shí)間。 A person39。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個(gè)人的時(shí)候，自己的想法總是特別地清晰。想要的，不想要的，界限明確 ，好像沒有什么可以撼動自己。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時(shí)候是最后又打起了退堂鼓。嫌惡過自己的怯懦，最終卻發(fā)現(xiàn)有很多 緣分 ，有很多錯過，好像冥冥之中真的已經(jīng)注定。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強(qiáng)心劑，或者說，是自以為是的精神寄托罷了。 At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt。 Those were broken into various shapes of stationery。 From the corner at the beginning of deep friendship。 Have declared the end of the encounter that haven39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。突然想到那件藍(lán)格子襯衫；那些被折成各種各樣形狀的信紙；那段從街角深巷伊始的友誼；還有那場還沒有開始就宣告了終結(jié)的邂逅計(jì)劃 …… 那些年那些天的非做不可，終于和青春一樣，都將在我們的人生中謝幕。 Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. The supersonic descent could happen as early as Sunda. The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。ll be traveling fast, so despite the distance, it will not be like diving into the 吉林建筑工程學(xué)院城建學(xué)院電氣信息工程系自動化專業(yè)課程設(shè)計(jì) 第 24頁 共 20頁 deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。s not needed. Instead, he plans to deploy his 270squarefoot (25squaremeter) main chute at an altitude of around 5,000 feet (1,524 meters). In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds. Even if everything goes as planned, it won39。t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). cause there 吉林建筑工程學(xué)院城建學(xué)院電氣信息工程系自動化專業(yè)課程設(shè)計(jì) 第 25頁 共 20頁