短語詞組短語belt tensioning roller 皮帶張緊輥子toothed belt relay roller 齒形皮帶導曏輪belt strap roller 皮帶輪belt stretching roller 緊帶輪;皮帶張緊輪belt hold roller 壓帶輥belt supporting roller 輸送帶支承滾筒Toothd belt relay roller 齒形皮帶導曏輪Belt roller coating 皮輥塗料belt tightener pinch roller 緊帶輪 返回 belt roller