计算机应用 基于网络的信息服务 释文 community internet of things 社区物联网
- background wood
- backgroung risk
- back hall of Er xian temple in Xixi, Lingchuan
- backhoe loader
- backhoe single bucket hydraulic excavator
- back-illuminated image sensor
- backing
- backing layer materials of patches
- backing-off
- backing store
- backlash
- backleg
- back light
- backlight
- backlit view
- back lobe
- backlot
- Backlund
- Backlund crater
- Backlund transformation
- back mixing
- back mutation
- back-off
- backoff
- back-off system