求翻译：3、目前氧化锆，氧化铝材料陶瓷喷嘴因其韧性差、耐磨性差已经被淘汰。目前市场主流 ，产品为氮连接碳化硅（白色），反应烧结碳化硅（黑色），无压烧结碳化硅（黑色），重结晶碳化硅（绿色）。是什么意思？

3, the present zirconia, alumina ceramic nozzle materials because of their poor toughness, poor wear resistance has been eliminated. Mainstream market, the product of nitrogen to connect silicon carbide (white), SiC (black), non-pressure sintered silicon carbide (black), recrystallized silicon carbi

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Because 3rd, the present zirconium oxide, the aluminum oxide material ceramics spray nozzle its toughness bad, the resistance to wear bad is already eliminated.At present the market mainstream, the product for the nitrogen connection silicon carbide (white), responded the agglutination silicon carbi

3, now the zirconia, alumina materials for ceramic nozzles because of their poor toughness and wear resistance of difference has been eliminated. The market mainstream, silicon carbide products as nitrogen connection (white), reaction-bonded silicon carbide (black), pressureless-sintered silicon car

3, the present zirconia, alumina ceramic nozzle materials because of their poor toughness, poor wear resistance has been eliminated. Mainstream market, the product of nitrogen to connect silicon carbide (white), SiC (black), non-pressure sintered silicon carbide (black), recrystallized silicon carbi