对于业余博物学者来说，在一片空地上或被炸后的废墟里可能发现种类繁多的植物群和动物群。A vacant lot or a bombsite can, to the amateur naturalist, produce an extraordinary variety of flora and fauna.通过观察某些现存的动物群和植物群,我们就能更清楚地了解这种困难了.We shall appreciate this difficult...
When you are finished remember to log off for security reasons.上完网后,由于安全因素一定要记着注销.Please log off before you go home.在你回家之前请关机.SHUTDOWN command is in progress . Please log off.请问, 我该如何操作才能关闭数据库呢?...
We also derive some algorithms about 2 D - DCT, 2 D - DST , 2 D - DCST.2D—DST和2D—DCST的快速算法及2D—DFT的一种快速算法.This paper proposes one kind of adaptive integration algorithms on basis of DST and DSmt.文章在DST和 DSmT的 基础上提出一种将两种融合...