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.special-char { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif!important;vertical-align: baseline;font-style: normal;font-weight: 300;} 氮化硅陶瓷具有强度高、耐高温、抗热震、抗氧化、耐磨、耐腐蚀等特点，是热机零部件用陶…