Its structure is simple and reliable, adopting metal seal valve, having fairly high cutting capability and seal property, adn flow -thru two -way.是什么意思_Its structure is simple and reliable, adopting metal seal valve, having fairly high cutting capability and seal property, adn flow -thru two -way.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句