| 释义 |
树脂shùzhī遇热变软,具有可塑性的高分子化合物的统称。一般是无定形固体或半固体。分为天然树脂和合成树脂两大类。松香、安息香等是天然树脂,酚醛树脂、聚氯乙烯树脂等是合成树脂。树脂是制造塑料的主要原料,也用来制涂料、黏合剂、绝缘材料等。{resin; general term for plastic high-molecular compound that turns soft when heated; generally amorphous solid or semi-solid in two categories — natural resins (e.g. rosin and benzoin) and synthetic resins (e.g. bakelite and PVC). Resin is a major raw material for making plastics, and can be also used to make varnish, glue, and insulating materials.} |