railway boxing beam的用法和樣例：
例句
- As the box beams are industrial products, so it is necessary to obtain a permit before they can be fabricated and stored in a prefabricating yard.
摘要鐵路箱梁屬于工業(yè)產(chǎn)品，須取得工業(yè)產(chǎn)品生產(chǎn)許可證方可在預制場(chǎng)內進(jìn)行箱梁的商品化制造和存儲。 - The analytic method and results in this paper has reference value to design and construction of box beams of double-track railways.
本文所采用的分析方法和結論對于雙線(xiàn)鐵路箱梁的設計與施工有一定的借鑒意義。
