Unlike plastics, polyurethane is suited for dynamic applications.
不同于塑料，聚氨酯适用于动态应用。
Engineers like ceramics because they can be heated without melting, unlike metals and plastics, though, they are brittle.
工程师们喜欢陶瓷，因为陶瓷在加热时不会熔化，但与金属和塑料不同的是，陶瓷易碎。
Engineers like ceramics because they can be heated without melting. Unlike metals and plastics, though, they are brittle.
工程师喜欢陶瓷材料，因为它们加热时不会融化，这点不像金属和塑料，尽管它们是脆的。
Unlike metals and plastics, though, they are brittle.
不像金属还有塑料，因为后两者十分脆弱。
Unlike metals and plastics, though, they are brittle.
不像金属还有塑料，因为后两者十分脆弱。
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