文学城论坛
+A-
小
中
大
(R+r-h)^2=(R+r)^2-R^2-h^2,...
jinjing
2011-08-15 17:31:02
( reads)
跟帖(1)
jinjing
2011-08-15 17:33:49
Sorry, It should be: (R+r-h)h=(R+r)^2-R^2-h^2,...
jinjing
2011-08-15 17:33:49Sorry, It should be: (R+r-h)h=(R+r)^2-R^2-h^2,...