This is the melt blown electrostatically charged polymer layer, it's polypropylene.

这是熔体吹制的带静电的聚合物层，这是聚丙烯。

Once the solution dried, the polymer layers became electrodes.

一旦溶液干燥， 聚合物层就变成了电极。

These days they also contain rubber-like polymers, layers of steel braiding and textile reinforcements, all of which improve performance and cut fuel consumption.

而如今，其成分还包括类橡胶聚合物，钢织物层和强化织物，所有这些可以提高轮胎的性能并减少油耗。