a device design for prevention
abortion prevention agents
abrasion prevention measure
Accident prevention
预防事故
事故预防
事故防止
事故防范
意外事故机率
安全预防
意外的预防
安全技术
安全措施
防灾机制
accident prevention instruction
accident prevention measure
accident prevention model
accident prevention regulations
Active Collision prevention System
active disaster prevention and mitigation
Active intrusion prevention system
acute infectious disease prevention system
Ad Hoc Committee on the Prevention of Arms Race in Outer Space
adjusted prevention and control effect