calibration of viscometer

例句：

1. 1.The engineer calibrated the machine before it was used for the first time.
   工程师在机器首次使用前对其进行了校准。
2. 2.The scientist calibrated the equipment to ensure accuracy in measurements.
   科学家校准设备以确保测量的准确性。
3. 3.The calibration of the new sensor is crucial for its performance.
   新传感器的校准对于其性能至关重要。