Two types of the multilayered fibrous material in the form of high tenacity fiber helmet shell....

由两种类型的在多层纤维材料中的高韧性纤维形成的头盔壳体。

youdao

Two types of the multilayered fibrous material in the form of high tenacity fiber helmet shell....

由两种类型的在多层纤维材料中的高韧性纤维形成的头盔壳体。

youdao