网络与数据通信 协议体系与组成结构 释文 OSI data link layer OSI数据链路层
- field control station
- field cooling
- field coordination
- field correction
- field corrector
- Field criterion for thermal instability
- field crop
- Field Crops Research
- field-current relation
- field curvature
- Field Day Theatre Company
- field decelerator
- field degree
- field dependence
- field desorption
- field desorption (FD)
- field desorption spectroscopy
- field diagnosis
- field diagnostic & treatment equipment
- field diaphragm
- field different
- field digital fence
- field discriminant
- field dispersion test
- field displacement