网络与数据通信 协议体系与组成结构 释文 protocol stack 协议栈
- alcohol production by microbial transformation
- alcohols poisoning
- alcohol test
- alcoholysis
- alcoholysis of polymers
- Alco metal
- Alcor
- Alcoriza Luis
- alcosol
- Alcott crater
- Alco two-stage distillation process
- alcoxide
- A. L. Crelle
- A. L. Crelle (1780—1855)
- Alcuin
- Alcuin sequence
- alcyl
- Alcyone
- ALD
- ALDA
- Aldabra Islands
- aldan facies
- aldanite
- Aldan River
- Al-Daqahliyyah