求翻译：本文介绍了特高压直流输电技术的特点、特高压直流输电技术所要解决的问题，以及它在我国发展的必要性和应用前景是什么意思？

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This article describes the characteristics of the high-voltage DC transmission technology, the high-voltage DC transmission technology, as well as the issues it addresses the need for it in my development and application in the future

This article introduced the extra-high tension direct current transmission technology characteristic, the extra-high tension direct current transmission technology needs to solve question, as well as it in our country national development and application prospect

This article describes the characteristics of uhvdc power transmission technology, ultra-high voltage direct current transmission technology to solve the problem, as well as the necessity and application prospects of its development in China