float ball valve的用法和樣例：
例句
- The metal hard seal fluctuation ball valve product scope sees the table.
金屬硬密封浮動(dòng)球閥的產(chǎn)品范圍見(jiàn)下表。 - The fluctuation ball ball valve's spheroid free supporting on the valve seat, forms the one-sided seal depending on the medium pressure, therefore cannot guarantee the seal.
浮動(dòng)球球閥的球體自由支承在閥座上，靠介質(zhì)的壓力形成單面密封，故不能保證密封。
