| 摘要 |
<p>The reinforcing element (R) comprises a surface layer (C1, C2) having a degree of crystallinity Tc and an atomic percentage of oxygen element Pc and an internal layer (C3) having a degree of crystallinity Ti and an atomic percentage of oxygen element Pi satisfying Ti/Tc≧1.10, Pi/Pc<1. Each surface layer (C1, C2) and internal layer (C3) is made of polyester.</p> |
