短語詞組短語block group descriptor table 塊組描述符表block descriptor word [計(jì)]分程序說明字Disk Block Descriptor 盤塊描述符descriptor block 描述符塊key descriptor block 關(guān)鍵詞描述符塊Command Descriptor Block 命令描述塊;指令描述塊partition descriptor block 分區(qū)描述符塊Data Descriptor Block 描述塊queue descriptor block 隊(duì)列描述符塊 返回 block descriptor