In PL/1, the depth indicated by a level number when all level numbers are in direct sequence, that is, when the increment between successive level numbers is one.; 在PL/1语言中,当所有的层号是单向顺序的,即相继层号间的增量为1时,由层号指出的层次深 度。 logical structure: 逻辑结构logical level: 逻辑1电平; 逻辑层次; 逻辑级structure member: 结构部件; 结构成员case logical control structure: 情况逻辑控制结构file logical structure: 文件逻辑结构下载手机词典可随时随地查词查翻译