| 单词 | Ni-hard |
| 释义 | Ni-hard (extremely rare) n WORD FAMILY Ni-hard n cast iron to which nickel has been added to make it resist abrasion Syn|Hyper Ni-hard iron alloy cast iron, alloy iron cast iron containing alloying elements (usually nickel or chromium or copper or molybdenum) to increase the strength or facilitate heat treatment |
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