The definition of operator homeomorphism mapping , together with its characterizations, is given in this paper.在算子开集理论中给出了算子同胚映射的概念, 得到了算子同胚映射的若干性质.Many of these adulatory characterizations were attributed to unnamed sou...
在底片上把图像上部的这个不重要的细节涂抹掉.Block out this unimportant detail at the top of your picture.光对底片发生作用从而产生照片.Photographs are produced by the action of light on film.你拍过几张底片了?How many exposures have you made?...