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| 气门钢 | |||
| 阀钢; 阀门钢 (【技】适用于制造各种阀门的钢种，亦称气阀钢。阀门钢在工作温度下应具有足够的高温强度和韧性以及高温硬度和耐磨性；好的抗氧化性和耐蚀性；在冷热循环的条件下组织和尺寸稳定且具有良好的加工性和焊接性。按结构组织类型，阀门钢分为马氏体型和奥氏体型。为提高耐磨性和耐蚀性，可进行表面渗铝和堆焊。) | |||
| 闸门钢 | |||
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valve steel : 20 phrases in 7 subjects |
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