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- 2015년 7월 10일 (금) 00:34 (차이 | 역사) . . (+3,493) . . 새글 GammonSimonsen624 (새 문서: Steel is a composite that comprises for the most element of iron and has a carbon content amongst .02 and 2.1 by weight, contingent upon the evaluation. Carbon is the most widely reco...) (최신)
