재료역학1 10주차 강의 동영상 - 전단력과 굽힘 모멘트 선도 및 문제풀이_주진원 교수

Round-16 hunt: picked; source: named-course long-video search (r16 wave 4); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier B passed; strict per-title check + final strict pass; oEmbed verified.