The relation between the interception factor and signal parameters is deduced. Large time bandwidth (TB) product is a necessary condition for an LPI signal.

导出了信号截获因子与信号参数的关系，认为大的时间带宽积是低截获概率信号的必要条件。

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The cultural value is the key factor which grants a product with the spirit value, so the relation between the design and the culture is more and more valued by the designers.

文化价值是赋予产品以精神价值的关键因素，因此，设计与文化的关系越来越受到设计者的重视。

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