食管支架
esophageal stents
esophageal stent
Oesophagus bracket
Complication membrane-covered esophageal stent
stent
endoscopy
食管支架置入
Esophageal stent placement
esophageal stent
WDM网状网
WDM mesh networks
WDM mesh network
wavelength division multiplexing mesh networks
本地交换网网管
Local switching network management
本地网网管系统
local network management system
低压环状管网
low-pressure circular pipe network