一种新的坐衬零件材料要求高耐磨性、高耐热性和高强度，热膨胀系数接近铸铁。
New material for sitz lining part requires high abrasion resistance and high strength at elevated temperature. It is difficulty for a single material to meet all the requirement.
该层间绝缘膜具有高耐热性、高耐溶剂性、高透光率、低介电常数等各种优良的性能。
The layer insulation film has various excellent performances such as high heat endurance, high solvent resistance, high transmittance and low dielectric constant.
工程陶瓷材料具有引人注目的特性：高硬度、高耐热性、化学惰性、热传导率低、断裂韧度低等。
Engineering ceramic materials have attractive properties: high hardness, high thermal resistance, chemical inertness, low thermal conductivity and low fracture toughness etc.
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