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中學生三分鐘英語演講稿:An apple tree
08-30Alongtimeago,therewasahugeappletree.Alittleboylovedtocomeandlayarounditeveryday.Heclimbedtothetreetop,atetheapples,tookanapundertheshadow…Helovedthetreeandthetreelovedtoplaywithhim.Timewentby&h... -
loop tree基函數的近奇異性處理
04-27全部作者:劉穎第1作者單位:電子科技大學電子工程學院論文摘要:低頻時的亥姆赫茲分解,使得我們需採用looptree基函數對低頻散射問題進行求解。但是,當頻率升高,而散射體的尺寸遠小於波長時,阻抗矩陣的性態依然很差。本文采用l... -
An Apple Tree
06-11Alongtimeago,therewasahugeappletree.Alittleboylovedtocomeandlayarounditeveryday.Heclimbedtothetreetop,atetheapples,tookanapundertheshadow…Helovedthetreeandthetreelovedtoplaywithhim.Timewentby&h... -
President Bush Lights National Christmas Tree英語演講稿
04-24December5,2002THEPRESIDENT:Thankyouverymuch.WiththelightingoftheNationalChristmasTree,weobserveoneofthegreattraditionsofournation'scapital.AndthroughouttheChristmasseason,werecallthatGod'slove...