频率
频率 的英文翻译
frequency
频率 的中文句子和英文句子
一个频带的上下界频率之差,单位用赫兹表示。
The difference, expressed in Hertz, between the two limiting frequencies of a band.
低频扬声器设计用来再现低音频率的扬声器
A loudspeaker designed to reproduce bass frequencies.
他变换了无线电传送的频率。
He varied the transmission frequency.
啸声干扰一种由于诸如闪电等大气干扰而产生的音频电磁波,具有典型的逐渐减弱频率的特征,该频减引起了检波设备中调逐渐下降的啸声
An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment.
激光器使偶然的混杂频率的电磁辐射,变为一个或更多的高度强化和连续的紫外线、可见光或红外线辐射的分离频率仪器中的一种
Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation.
鉴别器,鉴频器一种将输入信号的某一特征,如频率或相位转变为幅度变化装置,其变化大小因信号与标准或参考信号的不同程度而异
A device that converts a property of an input signal, such as frequency or phase, into an amplitude variation, depending on how the signal differs from a standard or reference signal.