Self-healing materials have been made before, mainly polymers and composites.

以前研发的自我恢复型材料，大部分是复合或者合成物。

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The main classes of materials are metals, polymers, ceramics, and composites.

材料的主要分类为金属、高聚物，陶瓷，及合成材料。

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Titanium based intermetallics and composites are not mentioned in this paper.

不包括含钛的金属间化合物及钛基复合材料的研发情况。

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And Honda's new Insight saloon car is made largely of aluminium and composites.

ECONOMIST: Fuel economy

Plastics and composites are already the materials of choice for interior panels.

ECONOMIST: Fuel economy

For a third consecutive month, all 20 cities and both composites were up in a monthly basis (the 10-city gained 1.5% and the 20-city was up 1.6%).

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