29:29'must have', 'might have', 'should have' & 'can't have' to talk about the past: Live English Class
BBC Learning English
MIT 6.622 Power Electronics, Spring 2023 Instructor: David Perreault View the complete course (or resource): https://ocw.mit.edu/courses/6-622-power-electronics-spring-2023/ YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP62UTc77mJoubhDELSC8lfR0 This lecture considers power factors and measures of distortion in AC systems. License: Creative Commons BY-NC-SA More information at https://ocw.mit.edu/terms More courses at https://ocw.mit.edu Support OCW at http://ow.ly/a1If50zVRlQ We encourage constructive comments and discussion on OCW’s YouTube and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at https://ocw.mit.edu/comments.
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