在使用新买的电子秤之前，记得先进行校准。

Remember to perform a ___calibration before using the new digital scale.

血糖仪的校准确保了测量结果的准确性。

The ___calibration of the glucose meter ensures accurate readings.

工程师们正在进行仪器的校准，以确保测量精度。

The engineers are performing ___calibration of the instruments to ensure measurement accuracy.