增开加班列车 run extra train

软件递增开发 software incremental development

增开列车 additional train operation

增开的列车 extra trains

增开的公共汽车 extra buses

开环增益 open loop gain ; open loop dc gain ; Aol

增量式开发 Incremental Development

增量开发 incremental development

增益开关 gain switch ; gain-switched

增益开关系统 gain-switching system