ball valve
短语词组
- ball relief valve 球形安全阀;安全球阀;减压球阀;球形平安阀
- ball clack valve 球瓣单向阀
- dual ball check valve 双球止逆阀;翻译;双球止逆阀英语
- ball bearing valve 球阀
- ball changeover valve 球形转换阀
- master ball -valve 球形主阀
- fixed ball -valve 固定球阀
- oil ball check valve 机油泵单向球阀
- Automatic ball drip valve 自动滴水球 返回 ball valve