插入式切换组件的英文

• plug in switching block
• plug-in switching block

• 插入式:    plug-in
• 插入式组件:    plug in package; plug-in module; plug-in package
• 可互换组件:    modular unit
• 替换组件:    substitute component
• 插入式分线组件；插入式分线设备:    plug-in tap-off unit