以下为句子列表：
英文: In this paper, a simple and practical electrically small planar unipole antenna is presented, and the dependences of input impedance on dimension of the antenna and frequency are investigated.
中文: 本文提出一种简单而实用的平面结构的单极子电小天线 ,研究输入阻抗随天线外形尺寸和频率的变化规律。
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英文: Investigation on Impedance Characteristics of Electrically Small Planar Unipole Antennas
中文: 电小平面型单极子天线阻抗特性的研究
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英文: STUDIES ON FUNCTIONAL POLYMER MEMBRANE ION-SELECTIVE ELECTRODES Ⅳ.IMPEDANCE BEHAVIOUR OF PELLET PRESSED PVC MEMBRANE ELECTRODES
中文: 功能高分子膜离子选择电极研究 Ⅳ.压片PVC膜氯离子选择电极的交流阻抗行为
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英文: Study on the Non-Uniformity of Characteristic Impedance of Coaxial Cables with Helical Corrugated Conductors
中文: 螺旋皱纹导体同轴电缆特性阻抗不均匀性研究
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英文: The antenna impedance bandwidth covers the .～0. GHz frequency range and effectively eliminates the .～(. ) GHz WLAN range.
中文: 实验结果表明,该天线阻抗频带覆盖了 .-0. GHz的频率范围,并有效地阻隔了.-. GHz的WLAN频段.
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