base of valve

例句：

1. 1. The engineer carefullyinspected the valve base before installing itin the machine.
   工程师在安装机器前仔细检查了阀门的基座。
2. 2. The valvewas designed to ensure proper flow of gases through the pipeline.
   该阀门的设计是为了确保气体通过管道时的正确流动。
3. 3. The valvebase is made of stainless steel and isresistant to corrosion.
   阀门基座由不锈钢制成，具有抗腐蚀能力。