Through a series of large-scale evaluations, TDT has become a hot problem for worldwide research in the fields of natural language processing, especially in information retrieval.
通过连续的大规模评测，话题识别与跟踪已成为国际上自然语言处理尤其是信息检索领域的一个研究热点。
Because of these, SAW Filter is more and more comprehensively applied in electronic information field, especially in RF signal processing field.
正因为这样，才使SAW滤波器在电子信息领域中得到了越来越广泛的应用，特别是应用于高频端rf射频信号滤波。
The information processing of remote sensing, especially the processing of digital images of remote sensing, has become one of the core problems in the remote sensing technology research.
遥感信息的处理，特别是遥感数字图像的处理，已成为遥感技术研究的核心问题之一。
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