老师要求对报告中的错误数据进行更正。

The teacher demanded the ___rectification of incorrect data in the report.

酒精经过反复提纯后，可生产高纯度的医用级乙醇。

The repeated ___rectification of alcohol produces high-purity medical-grade ethanol.

二极管用于交流电的整流过程。

Diodes are used for the ___rectification of alternating current.