box beams
英漢例句
- The successful alternative was the cast-in-place segmental prestressed concrete box girder.
最後採(cǎi)用的方案是分段現(xiàn)澆的預(yù)應(yīng)力混凝土箱形梁。 - It is provided with a telescopic bracket.The box beam at the external side of the telescopic part of the bracket is inserted into the square hole in the main beam.
其中，拖架具有可伸縮功能，是通過可伸縮部分外側(cè)的箱形梁插入貨臺(tái)主梁的方孔中，選擇箱形梁上孔的位置來實(shí)現(xiàn)的。