ball valve
短语词组
- ball relief valve 球形安全閥;安全球閥;減壓球閥;球形平安閥
- ball clack valve 球瓣單曏閥
- dual ball check valve 雙球止逆閥;繙譯;雙球止逆閥英語
- ball bearing valve 球閥
- ball changeover valve 球形轉換閥
- master ball -valve 球形主閥
- fixed ball -valve 固定球閥
- oil ball check valve 機油泵單曏球閥
- Automatic ball drip valve 自動滴水球 返回 ball valve