Hubless Architecture无集线器架构
hubless blade无中枢刀片
Hubless Chopper超型电单车
Hubless Motorcycle无轮毂摩托车
Hubless Dicing Blade镍基刀片
hubless spokeless wheel无毂无辐车轮
Hubless Pipe & Fittings铸铁管
HUBLESS CAST IRON SOIL PIPES无承口铸铁污水管