http://zhidao.baidu.com/question/168652744.html http://zhidao.baidu.com/question/88347416.html这是资料,http://image.baidu.com/i?ct=503316480&z=0&tn=baiduimagedetail&word=%B8%D0%B6%F7%CA%D6%B3%AD%B1%A8&in=12533&cl=2&lm=-1&pn=0&rn=1&di=37162862205&ln=1&fr=ala0&ic=0&s=&se=&sme=0&tab=&width=&height=&face=0&fb=0#pn2这是画
