QF1 series are 3/2-ways solenoide valves,they are water proof mainly used in open air work sites like minting.是什么意思_QF1 series are 3/2-ways solenoide valves,they are water proof mainly used in open air work sites like minting.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句