工程师正在校准仪器以确保测量数据的准确性。

The engineer is ___calibrating the equipment to ensure accurate measurements.

工程师正在校准仪器以确保测量精度。

The engineer is ___calibrating the instrument to ensure accurate measurements.

士兵们正在校准大炮以准备明天的演习。

The soldiers are ___calibrating the cannons for tomorrow's drill.