negative material

• 负性材料

negative material的用法和样例：

例句

1. When a rotor is cleaned, it will need to be re-burnished again to re-deposit the friction material onto the surface.
   当碟盘被清洗后，它将需要重新磨合以使摩擦性材料重新沉积到碟盘表面。
2. The textbook contains more explanatory material than models and is therefore hard to plough through.
   这本教科书中，说明性材料多于范文，所以难以阅读。