Unlike plastics, polyurethane is suited for dynamic applications.

不同于塑料，聚氨酯适用于动态应用。

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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。

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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。

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And, also unlike conventional plastics, they are eminently digestible (at least to micro-organisms) after use.

ECONOMIST: Evanescent or evergreen?

Unlike conventional plastics, their ultimate raw material is not oil, but maize.

ECONOMIST: Evanescent or evergreen?

Unlike household plastics, which can be recycled through the bring banks, these do not always have a number to indicate the type of material.

BBC: Guernsey States introduces more plastic recycling