例句與造句

1. Model 994blt portable hydrant backflow preventer is designed and manufactured to provide long - term service with minimal maintenance
   型號994blt移動式消防栓防回流閥的設(shè)計和制造理念就是為用戶提供長期的使用壽命和最少的維護工作。
2. Model 994blt portable hydrant backflow preventer meets the design requirements of most national standards . due to the portability of the unit , there are no national approvals available
   型號994blt移動式消防栓防回流閥滿足大多數(shù)美國國家標準的設(shè)計要求。由于這種裝置的移動性，所以目前沒有可使用的美國國家認證。
3. Model 994blt portable hydrant backflow preventer is for use in protection of potable water from a fire hydrant or other nonpermanent installation where flow is in one direction only and the possibility of a cross - connection exists
   型號994blt移動式消防栓防回流閥適用于保護飲用水系統(tǒng)不會受到消防栓或其他流向只是單向或存在交叉連接可能的臨時性安裝的應(yīng)用場合。
4. It's difficult to find portable hydrant in a sentence. 用portable hydrant造句挺難的