At the lower end of each roof slope, eaves purlins are provided over the ceiling joists.

  • 屋面两坡的下方, 檐口的连系梁支承在平顶搁栅之上.

  • 互联网摘选 2025-01-18 15:40:28

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句