After filling the crack, the healing agent reacts with the catalyst which is embedded in the matrix polymer.

充填裂纹后，愈合剂与包埋在基体聚合物中的催化剂反应。

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Healing in the composites is achieved through the addition of a microencapsulated healing agent and a catalyst to the matrix polymer.

在复合体系中的愈合作用是通过添加微包覆的愈合剂和一种催化基体聚合物的催化剂实现的。

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Upon mixing in the compounding process with a matrix polymer, the fugitive bonds break, and the cut fiber bundles disintegrate into separate individual fibers dispersed in the matrix polymer.

在配混过程中与基质聚合物混合之后，该非牢固的粘结发生破裂，并且该短切纤维束崩解成分散在基质聚合物中的单独的单根纤维。

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Engineers and scientists are developing many new types of materials such as carbon nanotubes, ceramic-matrix nanocomposites (and their metal-matrix and polymer-matrix equivalents), and new carbon fibers.

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Bacteria in such a film are embedded in a polymer matrix, which makes them harder to kill than isolated individuals.

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