单词 | spiegel iron |
例句 | Process of making steel, blowing air through molten pig-iron to burn out carbon, then adding spiegel iron; first production of cheap steel—Sir Henry Bessemer, England, 1855. The Story of Great Inventions 2011-10-05T02:00:16.353Z When the carbon is practically all burned out cast iron or spiegel iron, containing a known percentage of carbon, is added and allowed to mix thoroughly with the fluid. An Elementary Study of Chemistry Antonyms: deteriorate, decline, degenerate. iron, n. cast iron; wrought iron; pig iron; spiegel iron. Putnam's Word Book |
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