在地理信息的计算机处理过程中，若要真实描述这类曲线将非常消耗存贮容量，也极大地加重内外交换的负担。

During the computer processing of gi, it is capacity consumed to describe these curves truly, and the data exchanging between internal and external memory may be time consumed.

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以往这些用后残存耐材都被作为工业废弃物处理，这不仅加重了企业的经济负担，而且更重要的是浪费了可利用的资源、增加了社会的环境负担。

In the past the used refractory was treated as industrial wastes, which not only increased an enterprise 's economic burden, but also wasted utilizable resources, adding environmental load to society.

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