船用橡胶靠球结构:
1. 外层胶/ Outer Rubber
2. 覆盖在靠球外面的橡胶层，用来保护靠球骨架材料和内层胶免受外力损伤或磨损，主要特点：高强度、耐磨、耐老化和抗撕裂。
the rubber layer covered outside the ball is to protect skeleton material and inner glue from external force damage and abrasion. The main character is high strength, anti-abrasion, anti-aging as well as anti-tearing
2.锦纶帘布加强层/ Synthetic cord reinforced rubber layer
加强层是由锦纶帘线层缠绕组成的，维护靠球内部的空气压力， 其特点不变形、回弹高、强力大等优点。
the reinforce rubber layer is composed by synthetic cord, maintaining pressure inside the ball.
The main character is no deformation(不变形) and high springback （回弹高）
