backflow preventer
短语词组
- backflow w preventer 回流防止器
- BFP Backflow Preventer 回流防止器
- Low -resistance backflow preventer 低阻力倒流防止器
- Reduced pressure zone backflow preventer 减压回流防止阀
- Reduced -pressure type backflow preventer 减压型倒流防止器
- backflow preventer with high -energy consumption 高能耗管道倒流防止器 返回 backflow preventer