The HAV Hot Water Vent is designed for automatic or manual air release on baseboards, convectors, radiators, and high points in piping systems.是什么意思_The HAV Hot Water Vent is designed for automatic or manual air release on baseboards, convectors, radiators, and high points in piping systems.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句