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。
This month, researchers aboard the U.S. icebreaking ship Nathaniel B. Palmer are cruising in the Ross sea in search of the signatures of this current system.
研究人员于本月登上了正在罗斯海巡航的美国破冰船纳撒尼尔·b·帕尔默号，寻找这类洋流系统的特征。
This month, researchers aboard the U. S. icebreaking ship Nathaniel B. Palmer are cruising in the Ross Sea in search of the signatures of this current system.
研究人员于本月登上了正在罗斯海巡航的美国破冰船纳撒尼尔·B·帕尔默号，寻找这类洋流系统的特征。
This month, researchers aboard the U. S. icebreaking ship Nathaniel B. Palmer are cruising in the Ross Sea in search of the signatures of this current system.
研究人员于本月登上了正在罗斯海巡航的美国破冰船纳撒尼尔·B·帕尔默号，寻找这类洋流系统的特征。
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