This device's parts are: rubber bumper, inflated tyre, springs with steel bowls, inflated rubber balls.

本装置的部件有：橡胶保险杠、气内胎、有钢碗的弹簧、气皮球。

youdao

This device's parts are: rubber bumper, inflated tyre, springs with steel bowls, inflated rubber balls.

本装置的部件有：橡胶保险杠、气内胎、有钢碗的弹簧、气皮球。

youdao