fluid level gauge rod

例句：

1. 1. The engineer used a fluid level gauge rod to check the level of oil in the tank.
   工程师使用液位计杆检查油箱中的油位。
2. 2. The technician carefully adjusted the fluid level gauge rod to ensure accurate readings.
   技术员仔细调整了液位计杆，以确保准确的读数。
3. 3. The doctor used a fluid level gauge rod to monitor the patient's fluid levels during surgery.
   医生使用液位计杆在手术期间监测患者的液体水平。