信息安全 密码理论与技术 释文 key gun 密钥枪
- optomechatronics
- optometer
- optometrist
- optometry
- optomotor reaction
- optophone
- optothermal effect
- optotransistor
- optotype
- optrack
- optron
- optronics
- Optus satellite
- Opuntia ficus-indica
- OPW method
- OPW法
- Opéra, Paris
- OQC
- OR
- or
- oracle
- oracle bone binding
- oracle bone inscriptions
- Oracle Bones Collected by Tieyun
- oracle bones of Zhouyuan