The results provide a useful reference for selecting the tapered transitional waveguides.

分析结果为各种过渡波导的选用提供了参考。

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Middle-level managers of enterprises to solve problems assessment provide a useful reference.

为解决企业中层管理者考核难题提供一个有益的参考。

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The methods provide a useful reference for the identification of unknown complicated organic compounds.

为复杂未知有机化合物的鉴定提供了有益的借鉴。

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While not an exact scientific measure, a sampling of U.S. doctrinal writings on IW could provide a useful frame of reference and possibly some context for comparison between Chinese and American thinking.

CENTERFORSECURITYPOLICY: What is IW?