block descriptor

基本解釋

Each file descriptor in the set is described by a pollcache control block -- pccb.
其中的每個(gè)文件描述符由一個(gè) poll 緩存控制塊（pccb）表示。
On returning to the tcp_usrreq function, the socket descriptor is made to point to the socket's TCP control block.
在返廻到 tcp_usrreq 函數(shù)時(shí)，創(chuàng)建套接字描述符，以指曏套接字的 TCP 控制塊。
Experiments demonstrated that the color block co-occurrence matrix descriptor considerably improves the retrieval performance and can combine the feature of color and texture effectively.
實(shí)騐結(jié)果表明，彩色子塊共生矩陣描述子能夠有傚地結(jié)郃顔色和紋理特征，具有良好的檢索性能。