小房间体积 h(xd)^2。 硬币占空间 yhd^2。
brother, you are too careless,they should be:
I am totally wrong
此题有趣是因为可用通俗易懂的语言表述你的结果
鸡蛋挑骨头,挽回一点面子,给一个精解.因XD以后,有间隙,...
jinjing
2010-08-26 16:00:09brother, you are too careless,they should be: