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| 耐火钢 | |||
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| 耐火钢 (【技】含有适量铌、钼等合金元素，通过控制形变热处理，利用碳氮化物的沉淀强化和弥散强化以及合金元素的固溶强化，高温屈服强度得以提高的钢。其特点是：①高温屈服强度很高；②常温性能相当于焊接结构钢；③至少具有与普通结构钢相同的焊接性。) | |||
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fire -resistant steel : 1 phrase in 1 subject |
| Hydroelectric power stations | 1 |
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