问题描述:
速度~~~!!速度~~~~!!分不是问题!只要图象清晰贴切!!公开课用!!
问题解答:
http://www.baidu.com/s?ie=gb2312&bs=%D3%EA%BA%F3+%BF%CE%BC%FE&sr=&z=&cl=3&f=8&wd=%D3%EA%BA%F3%BF%CE%BC%FE&ct=0
http://zhidao.baidu.com/q?word=%C8%FD%C4%EA%BC%B6%C9%CF%B2%E1%A3%BC%D3%EA%BA%F3%A3%BE%B5%C4%BF%CE%BC%FE&ct=17&pn=0&tn=ikaslist&rn=10