calibration of testing instrument

例句：

1. 1. The engineercalibrated the machine before starting work.
   工程师在开始工作前校准了机器。
2. 2. Thenew software calibration will improve theaccuracy of the system.
   新的软件校准将提高系统的准确性。
3. 3. The calibration processis crucial for ensuring the equipment'sreliability.
   校准过程对于确保设备可靠性至关重要。