A method of towing vessels through polar ice by means of icebreaking tugs with a special stern notch suited to receive and bow of the vessel to be towed.
在极地冰区中，破冰船利用起尾部的特殊凹槽与被拖船船首相连的拖带方法。
By the treatment method it solves problem on deformation of wall and bottom plate relative to bow - shape edge plate and ensures engineering quality.
采用这种方法解决了更换底圈壁板必然涉及的壁板、底板(弓形边缘板、中幅板)变形问题，保证了工程质量。
Finally, a bow workpiece cutting fixture design instance is introduced to validate the availability and practicality of the cutting fixture design method which is brought forward in the paper.
最后本文通过一个实际的弓形物内覆盖件切割夹具设计实例验证了文中提出的切割夹具设计方法的有效性和实用性。
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