sheath extrusion

例句：

1. 1.The sheath extrusion process iscrucial for the production of high-qualitycables.
   护套挤出过程对于生产高质量电缆至关重要。
2. 2. The sheath extrusion process has been optimized to reduce materialwaste and increase efficiency.
   护套挤出工艺已被优化以减少材料浪费并提高效率。
3. 3.The sheath extrusion process involvesheating the outer layer of a cable,which then flows out through a die.
   护套挤出工艺涉及加热电缆的外层，然后通过模具流出。