| 单词 | sponge-iron |
| 释义 | > as lemmassponge-iron sponge-iron n. iron ore rendered light and porous by the removal of foreign matter. ΘΚΠ society > occupation and work > materials > raw material > mineral material > ore > [noun] > iron-ore > types of sponge-iron1874 sinter1909 1874 J. A. Phillips Elem. Metall. 434 The precipitation of copper is very rapidly effected by the use of sponge-iron. < as lemmas |
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