double-large post 中文意思是什麼

double-large post 解釋
雙大郵裁
  • double : adj 1 兩倍的，加倍的。2 雙的，二重的，雙重的；對，雙，兩，復。3 雙人用的；折疊式的。4 （意義）雙...
  • large : adj 1 （體積，空間，數量，規模等）大的，巨大的；（權限等）廣泛的。2 （心胸）寬廣的，度量大的；（...
  • post : n 1 （被指定的）地位，崗位；職位，職守。2 【軍事】哨所，站；哨兵警戒區；〈轉義〉哨兵，衛兵。3 基...
  1. A great amount of post tensioned pre - stressing concrete single box beam for double track ( as called the box beam hereinafter ) has been used on the line. it is of infeasibility in adoption of the traditional practice of pre - fabrication in precast factory and erection of the box beam with the track laying machine for that this type of beam is characterized by new structure, complicated workmanship, large volume and difficulty in transportation. therefore, the key and hardest problem to tackle is that what processing should be adopted to precast the box beam on site and that what kind of machinery should be used to transport and erect the box beam

    由於該型梁具有結構新、工藝復雜、體積大、運輸困難，將常規鐵路的橋梁廠製造橋梁、經過鐵路運梁到工地、邊鋪邊架進行橋梁製造與架設的傳統施工模式應用到該線是行不通的，必須在現場預制橋梁、並採用專門的運架梁設備進行橋梁架設，因此箱梁的製造、架設施工成為該線施工技術攻關的重點和難點。
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