信息安全 密码理论与技术 释文 symmetric cryptosystem 对称密码体制
- bar instability
- barion
- bar iron from Chenqixiang Mogou
- Barisa
- barite
- baritone
- barium
- barium bismuthate
- barium carbonate
- barium chloride
- barium compounds
- barium fuel cell
- barium hydroxide
- barium metallurgy
- barium nitrate
- barium peroxide
- barium petroleum sulfonate
- barium potassium bismuthate
- barium star
- Barium star and CH star
- barium sulfate
- barium sulfide
- barium titanate
- barium value
- bark