英语语法分析

Both bottom panels fitted and tacked to keel as well as along centreline seam.

面板底部都安装和上涨到龙骨以及沿中心线煤层。

Hull floors being fitted and checked for alignment with a centreline plumb line.

赫尔楼正在安装和检查调整，以中心线铅垂线。

The serious positive segregation centralizes around the centreline of the billet.

严重的正偏析集中在中心线周围。