preventer stay稳索
backfire preventer回火防止器
preventer pin安全销
suckling preventer防吮乳装置;防吮乳器
preventer stack防喷器组
Lighting preventer避雷针
preventer fork掣止叉
working preventer[油气] 作业防喷器
foam preventer防泡剂
N(名词) a person or thing that prevents 妨碍者; 妨碍物