您要查找的是不是：
- 双工管[电] duplex tube
- 工管结合combination of Technology and Management
- 土工管袋geotube
- 管pipe
- confidence belt (统计数学)置信带
- [+confidence，imagination，talent] 缺乏某物to be lacking in sth
- 管的vasal
- 网管network management
- 管路pipeline
- 品管QA
- 高管senior executive
- 弯管syphon
- 排气管vent-pipe
- 风管wind pipe
- 管件pipe fittings
- 配管tubing
- 热管thermotube
- 信管fuse
- 盘管pipe coil
