这些材料的特点是：绝缘性好，耐磨性强。
Such materials are characterized by good insulation and high resistance to wear.
具有耐腐蚀、耐磨性强，使用寿命长的优点。
The utility model has the advantages in corrosion resistance, strong abrasion resistance and long service life.
这些材料主要的特点是：绝缘性好，耐磨性强。
Such materials are chiefly characterized by good insulation and high resistance to wear.
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