high molecular weight high density polyethylene

例句：

1. 1. The new tire has a high molecular weight to provide better grip on the road.
   新轮胎具有高分子量，以在道路上提供更好的抓地力。
2. 2. High molecular weight polymers are used in many industrial applications.
   高分子量聚合物被用于许多工业应用中。
3. 3. The high molecular weight compound is difficult to process and melt.
   这种高分子化合物难以加工和熔融。