float valve needle

例句：

1. 1. The floatvalve needle is used to control theflow of oil in the engine.
   浮阀针用于控制发动机中油的流动。
2. 2. Theengineer carefully adjusted the float valve needle toensure optimal performance.
   工程师仔细调整了浮阀针以确保最佳性能。
3. 3. The floatvalve needle was designed toprevent oil from entering the combustion chamber during startup.
   浮阀针的设计是为了在启动时防止油进入燃烧室。