Bottom stringers being installed.

特约底部正在安装。

Tabs welded to stringers for bulkhead attachment.

标签焊接特约的舱壁附件。

Complete Stair calculations: Risers, Treads, Stringers and Incline Angle.

完成楼梯计算：冒口，踏，特约记者和倾斜角度。

Skin panels and stringers arrive from the steel supply company on a pallet.

皮肤面板和特约记者到达的钢铁供应公司托盘。

These include spars, skins, ribs, stringers, etc., and integral fuel tank structures.

这些包括梁，蒙皮，肋，纵梁等，还有整体油箱结构。