It was only when the hull was hanging freely from the lifting frame, clear of the seabed and the suction effect of the surrounding mud, that the salvage operation progressed to the second stage.
只有当船体从升降架上自由悬挂，脱离海床和周围泥浆的吸力作用时，打捞工作才进入第二阶段。
The hull was attached to a lifting frame via a network of bolts and lifting wires.
船体通过一个由螺栓和起重线组成的网络连接到吊架上。
In this stage, the lifting frame was fixed to a hook attached to a crane, and the hull was lifted completely clear of the seabed and transferred underwater into the lifting cradle.
在这一阶段，吊架固定在吊车的挂钩上，船体完全脱离海床，在水下被转移到吊篮里。
After building the hull mold frame, the pattern model is mounted securely within exposing only one fourth of the hull.
建设后，船体的模具框架，模式模型，是采取安全与揭露，只有四分之一的船体。
It USES techniques of image skeletonization, convex hull convergence and rectangular frame convergence algorithms.
运用于图像中轴变换、凸包逼近、矩边逼近等算法。
We must be in the frame of mind that we can get something from Hull.
我们必须在心情，我们可以得到的东西从赫尔。
We must be in the frame of mind that we can get something from Hull.
我们必须在心情，我们可以得到的东西从赫尔。
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