求翻译：随着计算机技术及信息技术的不断发展和数字化概念在测绘中的应用不断深入，数字高程模型(DEM)越来越成为地理空间基础设施和“数字地球”的重要组成部分。是什么意思？

With the application of computer technology and information technology continues to evolve and the concept of digital surveying and mapping in the deepening of the digital elevation model (dem) has increasingly become an important part of the geospatial infrastructure and digital earth ".

As computer technology and information technology of the continuous development and digital concept mapping in the application, digital elevation model (DEM) become a more and more geographical space infrastructure and the "Digital Earth" important part.

Are unceasingly thorough along with the computer technology and the information technology unceasing development and the digitized concept in the mapping application, digital elevation model (DEM) more and more becomes the geography space infrastructure and “the digital Earth” important constituent.

With the development of information technology and computer technology and application of digital surveying and mapping of concepts in continued to deepen, and digital elevation model (DEM) have increasingly become geospatial infrastructure and "Digital Earth" an important part of.

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