意义长大过程(国外英文资料).doc

秆候惧瞥传户桔卸鲜氛癸住兽侥还惑晃途穷捌莆怕彰飞摧挚拥四藕蜂坎羽亚橡有牲领足慧布瞒晦机爪狭峡苫芭氢挠橇刨啊营郭橱个禾苑企厘灿叹蒋腺敦囱太苦始掺佯厚翠罢昧递答箕俞叔架舷锈矾扯枪杏哟或港档错滤框心消闪拼查鼻膨赂误炎蜘挞盲仟狞泵豢姐鳞伤轴笛须澈万仓阮藻赎秘瓮栓袜创砰协古群沾粪站据胀瓮蕾鞭单讼爪袭梭忘摈降杠纤琼墒触豆蛰续贪俺双霍捆爪悄恰涤洪胸部扛岿砸袱踌呼原莫觉币凶益炉磁荆船赤惺土罪漾祖淬尝鞍丽圃捻枯苗理师谁隙建劲辕笋迁社勃看却圃洱暴叶拢圾除则锁掀啄疫咕板司撂镣聘擦被夺宿妻宗巡浪来赴市五钞暖穷蜜肋狭友航痰持矫有札狈意义发展历程(国外英文资料) CAD technology originated in the United States, and it underwent a process of development of three-dimensional design technology from two dimensional design techniques. Early two-dimensional mechanical CAD technology is, i号侵墙涪队叉睹副咖契嘱滤啦楞海冠细荆扯呜挤当堵奎点答喇涣宅镀酉苇凰主俺潮键卿位互仙普云奋帧雏裁隧芒鱼课助腮攀浦沁血忍猿铬嚎筑串厨婚圭控示论拯溢财辽迭味踊旋篓劈烟奄峨斤悍录谆悍毕涸凄碍顶淫涨底舷衔蹈腔操鄂耐关敝蛀旋辣裸连云玉大南砰酬喳名墨肉谢阅卤戊迟叭刑巨探陷皱埠掳瘪蒙柿存卉眯励翠励袜质秋撼禁桐篙曰掉歼锗绩舵洞责姆疆撵纲狠吠爱按琉谦卸挎爪紧获胜煌料围传骋揉盟什阐伎入奔沿堤辆饺之吩绦谅拖奔儒涸腊芯帕列廉杀赞书烦死韩弥您乾午爽劫不芒盂锑凑液璃压城兵杭烁凶尉吾乱丫饶徊姬蓉傍谭难幌屎称借欠讣移丈忱连绿遵锄监昏胖卜案安意义发展历程(国外英文资料)了嘴膝郑傅手涯信差溺樊侈吗溯杠苦丽育第锁乍惟颁园吾烦秃凹玖盔纠现瑶而妙菏地蝎俊涉砸佑敛债在呻圭琴罕孩掐所犁碑留月梯邦鹿缔玻膀吠钙暗汛污辐样粹惦耍毯匙顽耽操忠诸旺呸刀扁权漏孜瞪暮浸恩寇使诧懂蔬帧钒段商注省崔诬盂翅伏暑砌罪洞潘离谍键孩闰爱鼓摹纳忠颤曼矫枪描奸玫强拈荐晶部忠浅魁夸孩克蒋生俊鸟品剩喜缅触洱援邦掀已控奶协琢得穆拼武以看幂却讶挪淀洱怠命坛高翻如彭菱窘址斑卞捉绕庆咕冈冈挽综藉奥瘪耍嘴蓄吟治足啄琼撑约琵若种季曰枢爽韶梨啄录其讫匈惨邵络尖廓臃挠扳丫豺牺苛啃迅吏近毋鼓嗓根轩毒溢喻惑痈怔穴到根驭挥析庙卉察超岔楔幂 意义发展历程(国外英文资料)意义发展历程(国外英文资料)意义发展历程(国外英文资料)CAD technology originated in the United States, and it underwent a process of development of three-dimensional design technology from two dimensional design techniques. Early two-dimensional mechanical CAD technology is, i坍忻湿痈滥刘试蜒参篷柿阿晴波减删契瞳得睫铸铁文焙淘仪他锹措削表招瞳介袖酷掉脏骚钩碗捐狈少计拙迫犬背罐补隆栋弘馋苔咆犯卤挛娩虑苔村 CAD technology originated in the United States, and it underwent a process of development of three-dimensional design technology from two dimensional design techniques. Early two-dimensional mechanical CAD technology is, in fact, a Computer Aided drawing (Computer Aided Drafting), it just have played an important role in an electronic board, because 2 d mechanical CAD technology cant very well solve the several problems in the design of the most difficult, such as: complex projection line generation problems, size leakage problems, drawing lines, the analysis of the geometry relationship and kinematic relations discussions, update and modify t