以下为句子列表：
英文: A high efficiency dual-band RF power amplifier has an output and/or input of a high frequency transistor well terminated at the second harmonic frequency for dual-band operation.
中文: 本发明乃一种高效率双频射频功率放大器，提供高频电晶体的输出端与╱或输入端于双频操作中有良好的二阶谐波终止。
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英文: Abstract: Temporal properties of the second-ordre process with a Chirped incident pulse are theoretically calculated.The chirp influences the irradiance and the pulse shape of the second harmonic wave with large phase mismatch.The phase distortion of all
中文: 文摘:讨论了在大相位失谐下,基波为频率啁啾脉冲的二次谐波产生过程,结果表明选取合适的啁啾参量可以使二次谐波的光强提高,但同时会使其波形和相位发生变化.三波相位的畸变主要取决于入射的基波啁啾脉冲,而与相位匹配的失谐量关系不大.
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英文: In the system, a tunable dioxide laser is used as a sensor source, and the method of wavelength modulated is adopted, then concentration of gas is determined through detecting the generated second harmonic by opto-electronics converter.
中文: 用可调谐二极管激光作为传感光源，采用波长调制方法，通过对谐波信号进行光电探测可得气体浓度。
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英文: Backward Second Harmonic Generation Imaging of Tissues
中文: 生物活组织的背向二次谐波成像
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英文: Membrane Potential Dynamics of Nerve Fibers Fast Probed by Action-Potential-Encoded Second Harmonic Generation
中文: 动作电位编码光学二次谐波快速检测神经纤维膜电位动力学
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