expansion rivet的意思|示意

Two expansion stems are made by hard materials and arranged on the brim through a rivet and the brim fixed catch.

两伸缩柄由硬性材料做成并由铆钉和帽沿固定卡销安装在帽沿上。

The product has the two expansion stems being fixed on two side faces of the brim through the rivet and the brim fixed catch when using the hat.

本产品当帽子使用时两伸缩柄由铆钉和帽沿固定卡销固定在帽沿 两侧面上。