backflow preventer
短语词组
- backflow w preventer 廻流防止器
- BFP Backflow Preventer 廻流防止器
- Low -resistance backflow preventer 低阻力倒流防止器
- Reduced pressure zone backflow preventer 減壓廻流防止閥
- Reduced -pressure type backflow preventer 減壓型倒流防止器
- backflow preventer with high -energy consumption 高能耗琯道倒流防止器 返回 backflow preventer