【正文】 an 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(duì)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。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。 Those were broken into various shapes of stationery。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。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 。ll be traveling fast, so despite the distance, it will not be like diving into the 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。 Have declared the end of the encounter that haven39。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。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。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開頭的年齡已經(jīng)到了尾聲。s 21 win. Michel Platini, president of European football39。s antiracism taskforce, is in London for the Football Association39。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。 SX1=SX1/CSBC。 } VOID K3CL() { SJ3=SJ3+10。 S=SJ1。 CASE 4: K4CL()。 CASE 2: K2CL()。 IF(JPJS4) JPJS=0。 IF(K1!=1) // 判斷開關(guān)是否按下 { DELAY(400)。 S=T*CSBC/2。 TH1=0X9E。 //盲區(qū) WHILE(I) { } I=0。 I=10。 CL=1。 } VOID TIMER1INT (VOID) INTERRUPT 3 USING 2 { TH1=0X9E。 BUFFER[2]=CONVERT[XM2]。 DIGIT=1。 //顯示數(shù)據(jù)送 P1 口 DELAY(20)。 I3。 //顯示函數(shù) IF(SSJ2) BG=0。 } ELSE TIMETOBUFFER()。 BUFFER[0]=0X76。 WHILE(1) 電信學(xué)院綜合實(shí)驗(yàn)報(bào)告 小組成員：蘇濤 胡朝 楊宇翔 10 { KEYSCAN()。 SJ2=200。 CL=0。 TL1=0X57。 //定時(shí)器 0 中斷允許 ET1=1。 VOID OFFMSD()。 VOID K1CL()。 VOID DELAY(J)。//顯示標(biāo)識(shí) UNSIGNED CHAR CONVERT[10]={0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6F}。電路中除集成電路外，對(duì)各電子元件也無特別要求。當(dāng)收到超聲波反射波時(shí)，接收電路輸出端產(chǎn)生一個(gè)負(fù)跳變，在INT0 或 INT1 端產(chǎn)生一個(gè)中斷請(qǐng)求信號(hào)，單片機(jī)響應(yīng)外部中斷請(qǐng)求，執(zhí)行外部中斷服務(wù)子程序，讀取時(shí)間差，計(jì)算距離。 前方測距電路的輸出 端接單片機(jī) INT0端口，中斷優(yōu)先級(jí)最高，左、右測距電路的輸出通過與門 IC3A的輸出接單片機(jī) INT1 端口，同時(shí)單片機(jī) 和 接到 IC3A的輸入端，中斷源的識(shí)別由程序查詢來處理，中斷優(yōu)先級(jí)為先右后左。我們知道 C 語言程序有利于實(shí)現(xiàn)較復(fù)雜的算法，匯編語言程序則具有較高的效率且容易精細(xì)計(jì)算程序運(yùn)行的時(shí)間，而超聲波測距儀的程序既有較復(fù)雜的計(jì)算（計(jì)算距離時(shí)），又要求精細(xì)計(jì)算程序運(yùn)行時(shí)間（超聲波測距時(shí)），所以控制程序可采用 C 語言和匯編語言混合編程?？紤]到紅外遙控常用的載波頻率 38 kHz 與測距的超聲波頻率 40 kHz 較為接近，可以利用它制作超聲波檢測接收電路。超聲波換能器內(nèi)部有兩個(gè)壓電晶片和一個(gè)換能板。 超聲波 發(fā)射電路主要由反相器 74LS04 和超聲波發(fā)射換能器 T 構(gòu)成，單片機(jī) 端口輸出的 40kHz 的方波信號(hào)一路經(jīng)一級(jí)反向器后送到超聲波換能器的一個(gè)電極，另一路經(jīng)兩級(jí)反向器后送到超聲波換能器的另一個(gè)電極，用這種推換形式將方波信號(hào)加到超聲波換能器的兩端，可以提高超聲波的發(fā)射強(qiáng)度。單片機(jī)采用 AT89C5