- math: determine the length of
同义词：rectify
- reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities
同义词：refine, rectify
- bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one
同义词：reform, reclaim, regenerate, rectify
- set straight or right
同义词：rectify, remediate, remedy, repair, amend
- make right or correct
同义词：correct, rectify, right
- convert into direct current
同义词：rectify
