Thanks, It is very educational.... 8 I, ~. X/ O0 `here is a link you can read the drawings* `1 I& P# b( N" O: b; x, }
$ }5 ]( g9 f9 n& \2 i5 h3 \ http://www.dfg.cn/gb/zjjy/7/zjjy-7-1.htm 6 u9 J4 f: q# S# k 8 }( V& y5 X _& ?[ 本帖最后由 rockylily 于 2006-12-21 13:52 编辑 ]