An Apple Tree
Alongtimeago,therewasahugeappletree.Alittleboylovedtocomeandlayarounditeveryday.Heclimbedtothetreetop,atetheapples,tookanapundertheshadow…Helovedthetreeandthetreelovedtoplaywithhim.Timewentby&h...
loop tree基函数的近奇异性处理
全部作者：刘颖第1作者单位：电子科技大学电子工程学院论文摘要：低频时的亥姆赫兹分解，使得我们需采用looptree基函数对低频散射问题进行求解。但是，当频率升高，而散射体的尺寸远小于波长时，阻抗矩阵的性态依然很差。本文采用l...
中学生三分钟英语演讲稿：An apple tree
Alongtimeago,therewasahugeappletree.Alittleboylovedtocomeandlayarounditeveryday.Heclimbedtothetreetop,atetheapples,tookanapundertheshadow…Helovedthetreeandthetreelovedtoplaywithhim.Timewentby&h...
President Bush Lights National Christmas Tree英语演讲稿
December5,2002THEPRESIDENT:Thankyouverymuch.WiththelightingoftheNationalChristmasTree,weobserveoneofthegreattraditionsofournation'scapital.AndthroughouttheChristmasseason,werecallthatGod'slove...