사용자 기여
- 2015년 7월 4일 (토) 22:27 (차이 | 역사) . . (+3,400) . . 새글 CatheeKetcham458 (새 문서: Steel is a composite that comprises for the most portion of iron and has a carbon content material between .02 and 2.1 by weight, contingent upon the evaluation. Carbon is the most wi...) (최신)
