词汇	reversible mattress
释义	reversible mattress 双面垫
随便看	spring loaded idler spring-loaded idler spring-loaded idling valve spring loaded joint spring-loaded joint spring-loaded leather seal spring loaded length spring loaded lip seal spring-loaded live centre springloadedlubricator spring loaded lubricator springloaded magazine spring loaded membrane spring-loaded membrane spring loaded needle valve spring-loaded needle valve spring loaded nozzle spring-loaded nozzle spring loaded nozzle type safety valve spring loaded oil control ring spring-loaded oil control ring spring loaded oil seal spring-loaded oil seal spring loaded overflow valve spring-loaded overflow valve