It attains the aim of reducing weight, balanced operation, safe application and reducing wind obstruction.

达到减轻重量，操控平衡，使用安全，减低风阻的目的。

youdao

It attains the aim of reducing weight, balanced operation, safe application and reducing wind obstruction.

达到减轻重量，操控平衡，使用安全，减低风阻的目的。

youdao