Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/04499cc0e6222dba629c24e7b0781d96.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 parametric amplifier英英字典_parametric amplifier剑桥英语解释_parametric amplifier柯林斯英文解释_歐米惠必应词典
1. N a type of high-frequency amplifier in which energy from a pumping oscillator is transferred to the input signal through a circuit with a varying parameter, usually a varying reactance 蓡數放大器