域: land within certain boundari ...描述: describe; represent符: tally symbol; mark数据: data; record; information块: piece; lump; chunk逻辑文件描述符数据块: lfdb logical file descriptor block数据描述符: data description; dd data descriptor; ddesc data descriptor数据类型描述符: data type descriptor数据元素描述符: ded data element descriptor只读数据段描述符: descriptor for read-only data segment领域描述: domain description领域描述体: realm description entry区域描述: area description; region description区域描述体: realm description entry时域描述: time domain description描述符: descriptors; descrptor; deseriptor加索引的数据描述符: indexed data descriptor数据栈描述符寄存器: data stack descriptor领域描述字, 区域描述字: realm description word存储域描述体: save area description entry领域描述体 域描述项 区域描述体: realmdescriptionentry数据块: block data; blocked data; chunk; data block; datablock安全描述符: security host编辑描述符: edit descriptor变量描述符: vd variable descriptor