oleometer

例句：

1. 1.The oil meter is used to measure the amount of oil in the engine.
   油量计用于测量发动机中的油量。
2. 2. The engineer checked the oil meter before starting the engine.
   工程师在启动发动机前检查了油量计。
3. 3. The oleometer reading showed that the engine was running smoothly.
   油量计读数显示发动机运行平稳。