1 2 3 a b 1*a+2*c+3*e 1*b+2*d+3*furl
4 5 6 c d 4*a+5*c+6*e 4*b+5*d+6*fspa
e f.net
原文地址:http://wenku.baidu.com/link?url=jrzqrWHWSjORBp4V5rQgrzOVoXbgTCYt6CG5Dv_2XXUGrXXaUEI9S3IjzDs2s0krhWqrrlZkNeq5PqtN4w_IH9iR8ldkYy1lzrSV11CfG9qblog
二、公式:qt
http://blog.csdn.net/cquwentao/article/details/51445269flash
http://blog.csdn.net/flash129/article/details/8234599im