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white heart malleable cast iron
agric.
白心可锻铸铁
met.
白心可锻铸铁
(【技】通过将白口铸铁在氧化介质中密封退火,降低含碳量,使其组织和含碳量与钢相接近,断口呈白色,即可获得白心可锻铸铁。由于其塑性和韧性较差,工业上较少使用。)
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