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耐磨合金钢 nàimó héjīngāng
compr. wear resisting alloy steel
met. wear-resisting alloy steel; wear-resistant alloy steel (【技】在特定的磨损条件下,具有良好耐磨性的合金钢。按钢中含有合金元素的多少分为:低合金耐磨钢、中合金耐磨钢和高合金耐磨钢。)
tech. abrasion-resistant steel alloy