It is shown experimentally that a method available for compensating for the diffraction by centre frequency in narrow band filters can effectively improve their stopband characteristics.

本文介绍适用于窄带滤波器的中心频率衍射补偿方法。实验表明，此方法可以有效地改善滤波器的阻带特性。

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Guangxi geology well logging centre used comprehensive geophysical prospecting method to survey and evaluate the conditions of hydrogeology, engineering geology and environmental geology.

广西地质测井中心利用综合物探方法对场地的水文地质、工程地质和环境地质进行勘察评价。

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Based on GIS technology, agricultural land gradation was studied applying factor method and modifying method in the centre of Leshan City, Sichuan Province.

以GIS为平台，采用修正法和因素法相结合，对乐山市中区农用地定级进行了研究。

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The algorithm at the centre of his method first checks whether the number in question is a perfect square, cube, or other power of a smaller number.

ECONOMIST: Number theory

So at the age of 17, Mr. Wilson secretly auditioned in England and came back with his letter of acceptance at London's Drama Centre, which specialized in Method Acting.

WSJ: Lambert Wilson, Reloaded

The Shia objections that delayed the rescheduled signing ceremony on Friday centre on the proposed structure of the presidential council and the method of voting on a permanent constitution.

ECONOMIST: Political snags, security woes | The