The relationship between the moisture content in different textile materials and the shielding efficiency and power absorption of microwave was studied with self-made waveguide-network analyzer.
利用自制的波导网络分析仪，研究不同纤维材料的含水率与电磁波的屏蔽效能和功率吸收率之间的关系。
Appropriate size (namely groove width) of the dust absorption pore is designed according to power of the dust remover to centralize wind power and remove dust with high efficiency.
所述的吸气孔可以根据吸尘器的功率设计合适的大小（即槽宽），使风力集中，能高效除尘；
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