部界

区域；界域。

примеры:


划定（大陆架外部界限）	оконтуривание
海洋边界和外部界限的准确性与不确定性问题国际会议	International Conference on Accuracies and Uncertainties in Maritime Boundaries and Outer Limits
划定200海里以外大陆架外部界限和编写提交大陆架界限委员会的划界案的培训手册	Training Manual for Delineation of the Outer Limits of the Continental Shelf Beyond 200 Nautical Miles and for Preparation of Submissions to the Commission on the Limits of the Continental Shelf