The welding on the girder web first before installation, transportation lashing hook.
安装前先将焊在主梁腹板上，运输时捆绑用的吊钩。
Release the fore lashing rope, down with the boat and detach the fore hook.
解开前固艇索，放下小艇，松开前吊艇钩。
Release the fore lashing rope, down with the boat and detach the fore hook.
解开前固艇索，放下小艇，松开前吊艇钩。
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