短語詞組短語preventer stay 穩(wěn)索backfire preventer 廻火防止器preventer pin 安全銷suckling preventer 防吮乳裝置;防吮乳器preventer stack 防噴器組Lighting preventer 避雷針preventer fork 掣止叉working preventer [油氣]作業(yè)防噴器foam preventer 防泡劑blowout preventer 防噴器；消火花預(yù)防裝置backflow preventer 廻流防止器；防止廻流設(shè)施 返回 preventer