The experimental results at X-band for the radiation anglt agree well with the theory.
用X波段的实验模型测量了波束指向与频率的关系，测量结果与理论计算值符合得很好。
Theory of X-efficiency and the new institutional economics are basis for our study.
本文以X-效率理论和综合评价方法为理论基础。
Theory of X-efficiency and the new institutional economics are basis for our study.
本文以X-效率理论和综合评价方法为理论基础。
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