常見例句雙語例句This invention changes its 200 years history of limitation to roof gutter and drainpipe, due to its easy bending, cutting and welding property.改變200年以來利用鋅金屬易于彎折、剪焊等加工特性而限于作為制造屋面天溝及排水管之用。 返回 welding gutter