聚异丁烯为基本成分的附有人造毛毡的板，片，卷材。

Plates, sheets, coils of polyisobutylene with man-made felt.

youdao

聚异丁烯为基本成分的附有人造毛毡的板，片，卷材。

Plates, sheets, coils of polyisobutylene with man-made felt.

youdao