The first bicycle pump was invented around 1887. It featured a simple hand-operated design consisting of a cylindrical tube with a plunger that forced air into tyres. For decades, bike pumps—the ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果一些您可能无法访问的结果已被隐去。
显示无法访问的结果