您要查找的是不是：
- U管 U tube
- PVC-U管 PVC-U pipe
- 管 pipe
- PVC-U管件 PV-U pipe fitting
- 卧式U管高压加热器 Horizontal U - tube high pressure heater
- u盘
- 管的 vasal
- 网管 network management
- 气囊U管粘膜移植术治疗胆道损伤性狭窄 BALLOON U TUBE MUCOSAL GRAFT: AN IMPROVED TECHNIQUE FOR REPAIR OF HIGH BILE DUCT STRICTURE
- 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
