船用橡胶靠球结构:
1. 外层胶/ Outer Rubber
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）
3.内层胶/ Inner Rubber
靠球内壁的橡胶层，用来防止气体渗漏，保持靠球气压。
the inner rubber is to protect gas leakage（气体渗漏）, stay on the ball pressure.
4.端部法兰/ End Flange
靠球两端的金属制件，可安装充气阀和安全阀
the mental parts at the end of the ball can be installed inflation valve and safety valve.
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