| 摘要 |
<p>Lightweight composite materials which contain a cavity-containing thermoplastic matrix and three-dimensionally ordered reinforcing fibres over 50 mm in length, composite materials which contain reinforcing fibres in the compressed state which are over 50 mm in length and are capable of three-dimensional arrangement in a thermoplastic matrix can be used to produce mouldings and finished products which comprise or contain these materials. </p> |
